What to consider when welding dissimilar materials - WeldPulse
- 1. Logos, name Any unautho A product of Engineering Pulse Limited, UK es used within this horized use is illega What to consider when dissimilar A product of Engineering Pulse Limited, UK his document are co gal and strictly proh What to consider when dissimilar Engineering Pulse Limited, UK copyrighted by Eng ohibited. What to consider when welding dissimilar ngineering Pulse © What to consider welding dissimilar materials © 2013 What to consider welding materials What to consider materials Sales: sales@engineeringpulse.co.uk materials Info: weld@weldpulse.com sales@engineeringpulse.co.uk weld@weldpulse.com sales@engineeringpulse.co.uk weld@weldpulse.com sales@engineeringpulse.co.uk
- 2. Logos, name Any unautho 2 | P a g e A product of Engineering Pulse Limited, UK es used within this horized use is illega Dissimilar welding i to weld two different materials in piping where we have specification break Then we need to weld some dissimilar metals in pressure vessel Designers, most of the times, try to avoid dissimilar welding however Therefore, one needs to know about the details of dissimilar welding, possible combinations and the combinations which must not be welded. This is a guide to weld dissimilar metals. It will take you through all the considerati dealing with performance of a dissimilar weld and their significance. mind a list of factors to be consi P a g e A product of Engineering Pulse Limited, UK his document are co gal and strictly proh What to consider when welding dissimilar materials Dissimilar welding is not uncommon in petrochemical, oil & gas, refining and energy sectors. to weld two different materials in piping where we have specification break Then we need to weld some dissimilar metals in pressure vessel Designers, most of the times, try to avoid dissimilar welding however Therefore, one needs to know about the details of dissimilar welding, possible combinations and the combinations which must not be welded. This is a guide to weld dissimilar metals. It will take you through all the considerati with dissimilar welding. The purpose of this guide is to look into the factors affecting the performance of a dissimilar weld and their significance. mind a list of factors to be consi Engineering Pulse Limited, UK copyrighted by Eng ohibited. hat to consider when welding dissimilar materials not uncommon in petrochemical, oil & gas, refining and energy sectors. to weld two different materials in piping where we have specification break Then we need to weld some dissimilar metals in pressure vessel Designers, most of the times, try to avoid dissimilar welding however Therefore, one needs to know about the details of dissimilar welding, possible combinations and the combinations which must not be welded. This is a guide to weld dissimilar metals. It will take you through all the considerati dissimilar welding. The purpose of this guide is to look into the factors affecting the performance of a dissimilar weld and their significance. mind a list of factors to be considered while making any decision on welding two dissimilar metals. ngineering Pulse © hat to consider when welding dissimilar materials not uncommon in petrochemical, oil & gas, refining and energy sectors. to weld two different materials in piping where we have specification break Then we need to weld some dissimilar metals in pressure vessel Designers, most of the times, try to avoid dissimilar welding however Therefore, one needs to know about the details of dissimilar welding, possible combinations and the combinations which must not be welded. This is a guide to weld dissimilar metals. It will take you through all the considerati dissimilar welding. The purpose of this guide is to look into the factors affecting the performance of a dissimilar weld and their significance. dered while making any decision on welding two dissimilar metals. First © 2013 hat to consider when welding dissimilar materials not uncommon in petrochemical, oil & gas, refining and energy sectors. to weld two different materials in piping where we have specification break Then we need to weld some dissimilar metals in pressure vessel Designers, most of the times, try to avoid dissimilar welding however Therefore, one needs to know about the details of dissimilar welding, possible combinations and the This is a guide to weld dissimilar metals. It will take you through all the considerati dissimilar welding. The purpose of this guide is to look into the factors affecting the performance of a dissimilar weld and their significance. After going through this, you will be carrying in dered while making any decision on welding two dissimilar metals. First Words hat to consider when welding dissimilar materials not uncommon in petrochemical, oil & gas, refining and energy sectors. to weld two different materials in piping where we have specification break Then we need to weld some dissimilar metals in pressure vessels and heat exchangers fabrication also. Designers, most of the times, try to avoid dissimilar welding however Therefore, one needs to know about the details of dissimilar welding, possible combinations and the This is a guide to weld dissimilar metals. It will take you through all the considerati dissimilar welding. The purpose of this guide is to look into the factors affecting the After going through this, you will be carrying in dered while making any decision on welding two dissimilar metals. Words Sales: sales@engineeringpulse.co.uk hat to consider when welding dissimilar materials not uncommon in petrochemical, oil & gas, refining and energy sectors. to weld two different materials in piping where we have specification break or design requirement and heat exchangers fabrication also. Designers, most of the times, try to avoid dissimilar welding however it is not always achievable. Therefore, one needs to know about the details of dissimilar welding, possible combinations and the This is a guide to weld dissimilar metals. It will take you through all the considerations required while dissimilar welding. The purpose of this guide is to look into the factors affecting the After going through this, you will be carrying in dered while making any decision on welding two dissimilar metals. Info: weld@weldpulse.com sales@engineeringpulse.co.uk not uncommon in petrochemical, oil & gas, refining and energy sectors. We need or design requirement and heat exchangers fabrication also. it is not always achievable. Therefore, one needs to know about the details of dissimilar welding, possible combinations and the ons required while dissimilar welding. The purpose of this guide is to look into the factors affecting the After going through this, you will be carrying in dered while making any decision on welding two dissimilar metals. weld@weldpulse.com sales@engineeringpulse.co.uk We need or design requirement. and heat exchangers fabrication also. it is not always achievable. Therefore, one needs to know about the details of dissimilar welding, possible combinations and the ons required while dissimilar welding. The purpose of this guide is to look into the factors affecting the After going through this, you will be carrying in dered while making any decision on welding two dissimilar metals. weld@weldpulse.com sales@engineeringpulse.co.uk
- 3. Logos, name Any unautho 3 | P a g e A product of Engineering Pulse Limited, UK es used within this horized use is illega Choosing The factors need to be considered while in the diagram below. Every factor has been explained briefly in the next paragraphs. Cracking: Cracking can happen frequently when welding dissimilar metals. some dilution without forming a crack sensitive weld. Corrosion resistance: Against whatever damage mechanisms, a less resistive base metal among the two being welded offers good resistance, filler metal should handle them all. Low alloy steel and stainless steel weld being made to resist any hydrogen attack pressure should be completed with a filler metal having this resistance. Physical properties: Physical properties especially the thermal coefficient of expansion of the weld metal shall be close to the base meta between the values for the base metals. High temperature: For high temperature application, a filler metal not prone to any oxidation, embrittlement or other high temperature damages must be chosen. P a g e A product of Engineering Pulse Limited, UK his document are co gal and strictly proh What to consider when welding dissimilar materials Choosing filler metal The factors need to be considered while in the diagram below. Every factor has been explained briefly in the next paragraphs. Cracking: Cracking can happen frequently when welding dissimilar metals. some dilution without forming a crack sensitive weld. Corrosion resistance: Against whatever damage mechanisms, a less resistive base metal among the two being welded offers good resistance, filler metal should handle them all. Low alloy steel and stainless steel weld being made to resist any hydrogen attack pressure should be completed with a filler metal having this resistance. Physical properties: Physical properties especially the thermal coefficient of expansion of the weld metal shall be close to the base meta between the values for the base metals. High temperature: For high temperature application, a filler metal not prone to any oxidation, embrittlement or other high temperature damages must be chosen. Interstitial elements Engineering Pulse Limited, UK copyrighted by Eng ohibited. hat to consider when welding dissimilar materials Fig. 1 Representation of properties linked with Ferrite Number filler metal The factors need to be considered while in the diagram below. Every factor has been explained briefly in the next paragraphs. Cracking can happen frequently when welding dissimilar metals. some dilution without forming a crack sensitive weld. Corrosion resistance: Against whatever damage mechanisms, a less resistive base metal among the two being welded offers good resistance, filler metal should handle them all. Low alloy steel and stainless steel weld being made to resist any hydrogen attack pressure should be completed with a filler metal having this resistance. Physical properties: Physical properties especially the thermal coefficient of expansion of the weld metal shall be close to the base metals when the weld has to see higher temperature. between the values for the base metals. For high temperature application, a filler metal not prone to any oxidation, embrittlement or other high temperature damages must be chosen. Ductility Interstitial elements High temperature ngineering Pulse © hat to consider when welding dissimilar materials Fig. 1 Representation of properties linked with Ferrite Number filler metal The factors need to be considered while choosing a filler metal for in the diagram below. Every factor has been explained briefly in the next paragraphs. Cracking can happen frequently when welding dissimilar metals. some dilution without forming a crack sensitive weld. Against whatever damage mechanisms, a less resistive base metal among the two being welded offers good resistance, filler metal should handle them all. Low alloy steel and stainless steel weld being made to resist any hydrogen attack pressure should be completed with a filler metal having this resistance. Physical properties especially the thermal coefficient of expansion of the weld metal shall be ls when the weld has to see higher temperature. between the values for the base metals. For high temperature application, a filler metal not prone to any oxidation, embrittlement or other high temperature damages must be chosen. Dissimilar Welding Choosing Physical properties Melting temperature temperature © 2013 hat to consider when welding dissimilar materials Fig. 1 Representation of properties linked with Ferrite Number choosing a filler metal for in the diagram below. Every factor has been explained briefly in the next paragraphs. Cracking can happen frequently when welding dissimilar metals. some dilution without forming a crack sensitive weld. Against whatever damage mechanisms, a less resistive base metal among the two being welded offers good resistance, filler metal should handle them all. Low alloy steel and stainless steel weld being made to resist any hydrogen attack at certain temperature and hydrogen partial pressure should be completed with a filler metal having this resistance. Physical properties especially the thermal coefficient of expansion of the weld metal shall be ls when the weld has to see higher temperature. For high temperature application, a filler metal not prone to any oxidation, embrittlement or other high temperature damages must be chosen. Dissimilar Welding - Choosing Filler Physical properties Weldability hat to consider when welding dissimilar materials Fig. 1 Representation of properties linked with Ferrite Number choosing a filler metal for dissimilar welding are in the diagram below. Every factor has been explained briefly in the next paragraphs. Cracking can happen frequently when welding dissimilar metals. Filler metal must be capable of Against whatever damage mechanisms, a less resistive base metal among the two being welded offers good resistance, filler metal should handle them all. Low alloy steel and stainless steel at certain temperature and hydrogen partial pressure should be completed with a filler metal having this resistance. Physical properties especially the thermal coefficient of expansion of the weld metal shall be ls when the weld has to see higher temperature. For high temperature application, a filler metal not prone to any oxidation, embrittlement or Mechanical properties Corrosion properties Weldability Sales: sales@engineeringpulse.co.uk hat to consider when welding dissimilar materials Fig. 1 Representation of properties linked with Ferrite Number dissimilar welding are in the diagram below. Every factor has been explained briefly in the next paragraphs. Filler metal must be capable of Against whatever damage mechanisms, a less resistive base metal among the two being welded offers good resistance, filler metal should handle them all. Low alloy steel and stainless steel at certain temperature and hydrogen partial pressure should be completed with a filler metal having this resistance. Physical properties especially the thermal coefficient of expansion of the weld metal shall be ls when the weld has to see higher temperature. The value should be For high temperature application, a filler metal not prone to any oxidation, embrittlement or Cracking Corrosion properties Info: weld@weldpulse.com sales@engineeringpulse.co.uk Fig. 1 Representation of properties linked with Ferrite Number dissimilar welding are shown in the diagram below. Every factor has been explained briefly in the next paragraphs. Filler metal must be capable of Against whatever damage mechanisms, a less resistive base metal among the two being welded offers good resistance, filler metal should handle them all. Low alloy steel and stainless steel at certain temperature and hydrogen partial Physical properties especially the thermal coefficient of expansion of the weld metal shall be The value should be For high temperature application, a filler metal not prone to any oxidation, embrittlement or weld@weldpulse.com sales@engineeringpulse.co.uk shown Filler metal must be capable of Against whatever damage mechanisms, a less resistive base metal among the two being welded offers good resistance, filler metal should handle them all. Low alloy steel and stainless steel at certain temperature and hydrogen partial Physical properties especially the thermal coefficient of expansion of the weld metal shall be The value should be For high temperature application, a filler metal not prone to any oxidation, embrittlement or weld@weldpulse.com sales@engineeringpulse.co.uk
- 4. Logos, name Any unautho 4 | P a g e A product of Engineering Pulse Limited, UK es used within this horized use is illega Mechanical properties: Choose a filler metal equally strong and ductile as the weaker of the base metals to be welded. Weldability: Selected filler metal must have good weldability related to dilution, melting temperature and other physical property requirements. Melting temperature: Melting temperature of the filler metal must be matching to the base metal having lower melting temperature. Selecting high melting temperature filler metal would cause excessive dilution of the on Ductility: Filler metal must be ductile enough to sustain all the stresses caused by temperature changes due to different thermal conductivities of the base metals. Otherwise, cracking may take place. Interstitial Elements like oxygen, carbon, nitrogen, hydrogen must be low to have a ductile and less prone to hot cracking weld. Selection of welding process is also important when welding dissimilar metals. During welding, materials with high chemical composition may get diluted and that dilution may impact on the overall properties and performance of the weld. Dilution depends up welding process selected and the filler metal being used. With SMAW, dilution is 30 percent and for gas welding processes, it varies from 10 to 50 percent. Dilution is further affected by the joint design and fit Selecting Different P a g e A product of Engineering Pulse Limited, UK his document are co gal and strictly proh What to consider when welding dissimilar materials Mechanical properties: Choose a filler metal equally strong and ductile as the weaker of the base metals to be welded. Weldability: Selected filler metal must have good weldability related to dilution, melting temperature and ther physical property requirements. Melting temperature: Melting temperature of the filler metal must be matching to the base metal having lower melting temperature. Selecting high melting temperature filler metal would cause excessive dilution of the one having lower melting temperature. Ductility: Filler metal must be ductile enough to sustain all the stresses caused by temperature changes due to different thermal conductivities of the base metals. Otherwise, cracking may take place. Interstitial elements: Elements like oxygen, carbon, nitrogen, hydrogen must be low to have a ductile and less prone to hot cracking weld. Selection of welding process is also important when welding dissimilar metals. During welding, materials with high chemical composition may get diluted and that dilution may impact on the overall properties and performance of the weld. Dilution depends up welding process selected and the filler metal being used. With SMAW, dilution is 30 percent and for gas welding processes, it varies from 10 to 50 percent. Dilution is further affected by the joint design and fit-up. Selecting welding process Different dissimilar combinations Engineering Pulse Limited, UK copyrighted by Eng ohibited. hat to consider when welding dissimilar materials Mechanical properties: Choose a filler metal equally strong and ductile as the weaker of the base metals to be welded. Selected filler metal must have good weldability related to dilution, melting temperature and ther physical property requirements. Melting temperature: Melting temperature of the filler metal must be matching to the base metal having lower melting temperature. Selecting high melting temperature filler metal would cause excessive e having lower melting temperature. Filler metal must be ductile enough to sustain all the stresses caused by temperature changes due to different thermal conductivities of the base metals. Otherwise, cracking may take place. elements: Elements like oxygen, carbon, nitrogen, hydrogen must be low to have a ductile and less prone to hot cracking weld. Selection of welding process is also important when welding dissimilar metals. During welding, materials with high chemical composition may get diluted and that dilution may impact on the overall properties and performance of the weld. Dilution depends up welding process selected and the filler metal being used. With SMAW, dilution is 30 percent and for gas welding processes, it varies from 10 to 50 percent. Dilution is further affected by the joint welding process dissimilar combinations ngineering Pulse © hat to consider when welding dissimilar materials Choose a filler metal equally strong and ductile as the weaker of the base metals to be welded. Selected filler metal must have good weldability related to dilution, melting temperature and ther physical property requirements. Melting temperature of the filler metal must be matching to the base metal having lower melting temperature. Selecting high melting temperature filler metal would cause excessive e having lower melting temperature. Filler metal must be ductile enough to sustain all the stresses caused by temperature changes due to different thermal conductivities of the base metals. Otherwise, cracking may take place. Elements like oxygen, carbon, nitrogen, hydrogen must be low to have a ductile and less prone Selection of welding process is also important when welding dissimilar metals. During welding, materials with high chemical composition may get diluted and that dilution may impact on the overall properties and performance of the weld. Dilution depends up welding process selected and the filler metal being used. With SMAW, dilution is 30 percent and for gas welding processes, it varies from 10 to 50 percent. Dilution is further affected by the joint welding process dissimilar combinations Nickel alloys © 2013 hat to consider when welding dissimilar materials Choose a filler metal equally strong and ductile as the weaker of the base metals to be welded. Selected filler metal must have good weldability related to dilution, melting temperature and Melting temperature of the filler metal must be matching to the base metal having lower melting temperature. Selecting high melting temperature filler metal would cause excessive e having lower melting temperature. Filler metal must be ductile enough to sustain all the stresses caused by temperature changes due to different thermal conductivities of the base metals. Otherwise, cracking may take place. Elements like oxygen, carbon, nitrogen, hydrogen must be low to have a ductile and less prone Selection of welding process is also important when welding dissimilar metals. During welding, materials with high chemical composition may get diluted and that dilution may impact on the overall properties and performance of the weld. Dilution depends up welding process selected and the filler metal being used. With SMAW, dilution is 30 percent and for gas welding processes, it varies from 10 to 50 percent. Dilution is further affected by the joint dissimilar combinations Carbon steels Stainless steels Nickel alloys hat to consider when welding dissimilar materials Choose a filler metal equally strong and ductile as the weaker of the base metals to be welded. Selected filler metal must have good weldability related to dilution, melting temperature and Melting temperature of the filler metal must be matching to the base metal having lower melting temperature. Selecting high melting temperature filler metal would cause excessive Filler metal must be ductile enough to sustain all the stresses caused by temperature changes due to different thermal conductivities of the base metals. Otherwise, cracking may take place. Elements like oxygen, carbon, nitrogen, hydrogen must be low to have a ductile and less prone Selection of welding process is also important when welding dissimilar metals. During welding, materials with high chemical composition may get diluted and that dilution may impact on the overall properties and performance of the weld. Dilution depends up welding process selected and the filler metal being used. With SMAW, dilution is 30 percent and for gas welding processes, it varies from 10 to 50 percent. Dilution is further affected by the joint Carbon steels Stainless steels Sales: sales@engineeringpulse.co.uk hat to consider when welding dissimilar materials Choose a filler metal equally strong and ductile as the weaker of the base metals to be welded. Selected filler metal must have good weldability related to dilution, melting temperature and Melting temperature of the filler metal must be matching to the base metal having lower melting temperature. Selecting high melting temperature filler metal would cause excessive Filler metal must be ductile enough to sustain all the stresses caused by temperature changes due to different thermal conductivities of the base metals. Otherwise, cracking may take place. Elements like oxygen, carbon, nitrogen, hydrogen must be low to have a ductile and less prone Selection of welding process is also important when welding dissimilar metals. During welding, materials with high chemical composition may get diluted and that dilution may impact on the overall properties and performance of the weld. Dilution depends up welding process selected and the filler metal being used. With SMAW, dilution is 30 percent and for gas welding processes, it varies from 10 to 50 percent. Dilution is further affected by the joint Alloy steels Info: weld@weldpulse.com sales@engineeringpulse.co.uk Choose a filler metal equally strong and ductile as the weaker of the base metals to be welded. Selected filler metal must have good weldability related to dilution, melting temperature and Melting temperature of the filler metal must be matching to the base metal having lower melting temperature. Selecting high melting temperature filler metal would cause excessive Filler metal must be ductile enough to sustain all the stresses caused by temperature changes due to different thermal conductivities of the base metals. Otherwise, cracking may take place. Elements like oxygen, carbon, nitrogen, hydrogen must be low to have a ductile and less prone During welding, materials with high chemical composition may get diluted and that dilution may impact on the overall properties and performance of the weld. Dilution depends upon the welding process selected and the filler metal being used. With SMAW, dilution is 30 percent and for gas welding processes, it varies from 10 to 50 percent. Dilution is further affected by the joint weld@weldpulse.com sales@engineeringpulse.co.uk Selected filler metal must have good weldability related to dilution, melting temperature and Melting temperature of the filler metal must be matching to the base metal having lower melting temperature. Selecting high melting temperature filler metal would cause excessive Filler metal must be ductile enough to sustain all the stresses caused by temperature changes Elements like oxygen, carbon, nitrogen, hydrogen must be low to have a ductile and less prone During welding, materials with high chemical composition may get diluted and that dilution may on the welding process selected and the filler metal being used. With SMAW, dilution is 30 percent and for gas welding processes, it varies from 10 to 50 percent. Dilution is further affected by the joint weld@weldpulse.com sales@engineeringpulse.co.uk
- 5. Logos, name Any unautho 5 | P a g e A product of Engineering Pulse Limited, UK es used within this horized use is illega Carbon & low alloy steels Specific considerations Filler selection P a g e A product of Engineering Pulse Limited, UK his document are co gal and strictly proh What to consider when welding dissimilar materials Carbon & low alloy steels Specific considerations Filler selection Austenitic stainless steel filler • E/ER- • Chances of carbon migration at higher temperatures Nickel alloy filler • ENiCrFe • Recommended for high temperature High temperature Thermal stresses Ferrite Number Engineering Pulse Limited, UK copyrighted by Eng ohibited. hat to consider when welding dissimilar materials Carbon & low alloy steels Specific considerations Austenitic stainless steel filler -309 Chances of carbon migration at higher temperatures Nickel alloy filler ENiCrFe-2 / 3, ERNiCr Recommended for high temperature High temperature PWHT Thermal stresses Ferrite Number ngineering Pulse © hat to consider when welding dissimilar materials Carbon & low alloy steels to Austenitic Austenitic stainless steel filler Chances of carbon migration at higher temperatures Nickel alloy filler 2 / 3, ERNiCr-3 Recommended for high temperature •Service temperature exceeding 700 F migration from austentic stainless steel filler •Recommended filler is nickel alloy High temperature •Carbon or alloy steel requiring PWHT may be buttered with ERNiCr before welding to SS •PWHT, if required, must not be waived off •Thermal coefficient must be considered for the base metals to be welded. Major difference leads to high thermal stresses at elevated temperatures Thermal stresses •When using austenitic filler metal, resulting weld ferrite number need to be predicted. Refere WeldPulse guide over ferrite numberFerrite Number © 2013 hat to consider when welding dissimilar materials Austenitic Austenitic stainless steel filler Chances of carbon migration at higher temperatures Recommended for high temperature Service temperature exceeding 700 F migration from austentic stainless steel filler Recommended filler is nickel alloy Carbon or alloy steel requiring PWHT may be buttered with ERNiCr before welding to SS PWHT, if required, must not be waived off Thermal coefficient must be considered for the base metals to be welded. Major difference leads to high thermal stresses at elevated temperatures When using austenitic filler metal, resulting weld ferrite number need to be predicted. Refere WeldPulse guide over ferrite number hat to consider when welding dissimilar materials Austenitic Stainless steels Chances of carbon migration at higher temperatures Service temperature exceeding 700 F migration from austentic stainless steel filler Recommended filler is nickel alloy Carbon or alloy steel requiring PWHT may be buttered with ERNiCr-3 and heat treated before welding to SS PWHT, if required, must not be waived off Thermal coefficient must be considered for the base metals to be welded. Major difference leads to high thermal stresses at elevated temperatures When using austenitic filler metal, resulting weld ferrite number need to be predicted. Refere WeldPulse guide over ferrite number Sales: sales@engineeringpulse.co.uk hat to consider when welding dissimilar materials Stainless steels Chances of carbon migration at higher temperatures Service temperature exceeding 700 F - carbon migration from austentic stainless steel filler Recommended filler is nickel alloy Carbon or alloy steel requiring PWHT may be 3 and heat treated PWHT, if required, must not be waived off Thermal coefficient must be considered for the base metals to be welded. Major difference leads to high thermal stresses at When using austenitic filler metal, resulting weld ferrite number need to be predicted. Refere WeldPulse guide over ferrite number Info: weld@weldpulse.com sales@engineeringpulse.co.uk Stainless steels (300 series) carbon migration from austentic stainless steel filler Carbon or alloy steel requiring PWHT may be When using austenitic filler metal, resulting Refere WeldPulse guide over ferrite number weld@weldpulse.com sales@engineeringpulse.co.uk (300 series) weld@weldpulse.com sales@engineeringpulse.co.uk
- 6. Logos, name Any unautho 6 | P a g e A product of Engineering Pulse Limited, UK es used within this horized use is illega Carbon & low alloy steels to Filler selection Specific considerations P a g e A product of Engineering Pulse Limited, UK his document are co gal and strictly proh What to consider when welding dissimilar materials Carbon & low alloy steels to Filler selection Specific considerations High temperature Filler containing Cr equal to one having less Cr • Perform PWHT Austenitic filler wire • E/ER • Not applicable if any steel is to be used as a pressure vessel Carbon steel suiting filler in case of CS to Cr SS • A Cr SS suiting filler can also be used but preferable to use less hardenable filler Engineering Pulse Limited, UK copyrighted by Eng ohibited. hat to consider when welding dissimilar materials Carbon & low alloy steels to Specific considerations High temperature PWHT Filler containing Cr equal to one having less Cr Perform PWHT Austenitic filler wire E/ER-309 Not applicable if any steel is to be used as a pressure vessel Carbon steel suiting filler in case of CS to Cr SS A Cr SS suiting filler can also be used but preferable to use less hardenable filler ngineering Pulse © hat to consider when welding dissimilar materials Carbon & low alloy steels to C High temperature PWHT Filler containing Cr equal to one having less Cr Perform PWHT Austenitic filler wire Not applicable if any steel is to be used as a pressure vessel Carbon steel suiting filler in case of CS to Cr SS A Cr SS suiting filler can also be used but preferable to use less hardenable filler © 2013 hat to consider when welding dissimilar materials Cr Stainless steels • Operation upto 800 F • Above this temperature, careful assessment is required • Heat treated requirement should be assessed carefully • Follow the construction code requirements Filler containing Cr equal to one having less Cr Not applicable if any steel is to be used as a pressure vessel Carbon steel suiting filler in case of CS to Cr SS A Cr SS suiting filler can also be used but preferable to use less hat to consider when welding dissimilar materials Stainless steels Operation upto 800 F Above this temperature, careful assessment is required Heat treated requirement should be assessed carefully Follow the construction code requirements Filler containing Cr equal to one having less Cr Not applicable if any steel is to be used as a pressure vessel Carbon steel suiting filler in case of CS to Cr SS A Cr SS suiting filler can also be used but preferable to use less Sales: sales@engineeringpulse.co.uk hat to consider when welding dissimilar materials Stainless steels (400 series Operation upto 800 F Above this temperature, careful assessment is required Heat treated requirement should be assessed carefully Follow the construction code Filler containing Cr equal to one having less Cr Not applicable if any steel is to be used as a pressure vessel Carbon steel suiting filler in case of CS to Cr SS A Cr SS suiting filler can also be used but preferable to use less Info: weld@weldpulse.com sales@engineeringpulse.co.uk (400 series) Above this temperature, careful Heat treated requirement should A Cr SS suiting filler can also be used but preferable to use less weld@weldpulse.com sales@engineeringpulse.co.uk weld@weldpulse.com sales@engineeringpulse.co.uk
- 7. Logos, name Any unautho 7 | P a g e A product of Engineering Pulse Limited, UK es used within this horized use is illega Nickel alloys Filler selection Specific considerations P a g e A product of Engineering Pulse Limited, UK his document are co gal and strictly proh What to consider when welding dissimilar materials Nickel alloys Filler selection Specific considerations Nickel alloy / Nickel Chromium • Nickel alloy fillers should be used to join nickel alloys to CS, alloy steel or stainless steels. No other filler should be considered. Ni alloy fillers are selected due to their good ductility and tolerance of dilution by iron in steel dilution Chromium dilution PWHT Engineering Pulse Limited, UK copyrighted by Eng ohibited. hat to consider when welding dissimilar materials Nickel alloys to steels Specific considerations Nickel alloy / Nickel Chromium Nickel alloy fillers should be used to join nickel alloys to CS, alloy steel or stainless steels. No other filler should be considered. Ni alloy fillers are selected due to their good ductility and tolerance of dilution by iron in steel Iron dilution Chromium dilution PWHT ngineering Pulse © hat to consider when welding dissimilar materials to steels Nickel alloy / Nickel Chromium Nickel alloy fillers should be used to join nickel alloys to CS, alloy steel or stainless steels. No other filler should be considered. Ni alloy fillers are selected due to their good ductility and tolerance of dilution by iron in steel •Iron dilution if couldn't be tolerated during welding to any steel to nickel alloy would cause hot cracking •It depends upon the filler used and the welding process •SMAW process with nickel alloy or Nickel chromium can handle iron dilution up to 40% dilution •Chromium dilution may also take place while welding stainless steels to Nickel. It can be controlled by using Nickel or Nickel Chromium filler •Welding process doesn't have much of impact over chromium dilution Chromium dilution •PWHT shall be done as required by the steel end side. PWHT © 2013 hat to consider when welding dissimilar materials Nickel alloy / Nickel Chromium Nickel alloy fillers should be used to join nickel alloys to CS, alloy steel or stainless steels. No other filler should be considered. Ni alloy fillers are selected due to their good ductility and tolerance Iron dilution if couldn't be tolerated during welding to any steel to nickel alloy would cause hot cracking It depends upon the filler used and the welding process SMAW process with nickel alloy or Nickel chromium can handle iron dilution up to 40% Chromium dilution may also take place while welding stainless steels to Nickel. It can be controlled by using Nickel or Nickel Chromium filler Welding process doesn't have much of impact over chromium dilution PWHT shall be done as required by the steel end side. hat to consider when welding dissimilar materials Nickel alloy fillers should be used to join nickel alloys to CS, alloy steel or stainless steels. No other filler should be considered. Ni alloy fillers are selected due to their good ductility and tolerance Iron dilution if couldn't be tolerated during welding to any steel to nickel alloy would cause hot cracking It depends upon the filler used and the welding process SMAW process with nickel alloy or Nickel chromium can handle iron dilution up to 40% Chromium dilution may also take place while welding stainless steels to Nickel. It can be controlled by using Nickel or Nickel Chromium filler Welding process doesn't have much of impact over PWHT shall be done as required by the steel end side. Sales: sales@engineeringpulse.co.uk hat to consider when welding dissimilar materials Nickel alloy fillers should be used to join nickel alloys to CS, alloy steel or stainless steels. No other filler should be considered. Ni alloy fillers are selected due to their good ductility and tolerance Iron dilution if couldn't be tolerated during welding to any steel to nickel alloy would cause hot cracking It depends upon the filler used and the welding process SMAW process with nickel alloy or Nickel chromium can Chromium dilution may also take place while welding stainless steels to Nickel. It can be controlled by using Welding process doesn't have much of impact over PWHT shall be done as required by the steel end side. Info: weld@weldpulse.com sales@engineeringpulse.co.uk Nickel alloy fillers should be used to join nickel alloys to CS, alloy steel or stainless steels. No other filler should be considered. Ni alloy fillers are selected due to their good ductility and tolerance Iron dilution if couldn't be tolerated during welding to It depends upon the filler used and the welding process SMAW process with nickel alloy or Nickel chromium can stainless steels to Nickel. It can be controlled by using weld@weldpulse.com sales@engineeringpulse.co.uk weld@weldpulse.com sales@engineeringpulse.co.uk
- 8. Logos, name Any unautho 8 | P a g e A product of Engineering Pulse Limited, UK es used within this horized use is illega Determining For dissimilar welding, resultant weld composition can be estimated if dilution is known. As told earlier, dilution is based upon the welding process being used. For SMAW, dilution is almost 30%. Resultant composition is measured for each critical element based upon the dilution percentage. We need to know the chemical composition of bot used. Taking on example of welding P11 to SS304 with SMAW the weld Cr (weld) = Cr (P11) * 0.15 + Cr (304) * 0.15 + Cr (309) * 0.70 All compositions in % Same formula can then be used for other elements. Final Dealing with dissimilar welding requires good knowledge of materials being joined and the critical issues associated with their welding. Typical guidelines have been provided within this document however service conditions and other codes requ wherever stands ma As a general rule, preheat and post weld heat treatment material requiring high temperature and holding time. Filler metal selection should be made considering all the factors defined above and t should suit the service conditions. These guidelines should be used only for getting a procedure qualified and not for applying them directly without qualification. P a g e A product of Engineering Pulse Limited, UK his document are co gal and strictly proh What to consider when welding dissimilar materials Determining For dissimilar welding, resultant weld composition can be estimated if dilution is known. As told earlier, dilution is based upon the welding process being used. For SMAW, dilution is almost 30%. Resultant composition is measured for each critical element based upon the dilution percentage. We need to know the chemical composition of bot Taking on example of welding P11 to SS304 with SMAW the weld can be estimated as follows: Cr (weld) = Cr (P11) * 0.15 + Cr (304) * 0.15 + Cr (309) * 0.70 All compositions in % Same formula can then be used for other elements. Final Words Dealing with dissimilar welding requires good knowledge of materials being joined and the critical issues associated with their welding. Typical guidelines have been provided within this document however service conditions and other codes requ herever stands ma As a general rule, preheat and post weld heat treatment material requiring high temperature and holding time. Filler metal selection should be made considering all the factors defined above and t should suit the service conditions. These guidelines should be used only for getting a procedure qualified and not for applying them directly without qualification. Engineering Pulse Limited, UK copyrighted by Eng ohibited. hat to consider when welding dissimilar materials Determining resultant weld composition For dissimilar welding, resultant weld composition can be estimated if dilution is known. As told earlier, dilution is based upon the welding process being used. For SMAW, dilution is almost 30%. Resultant composition is measured for each critical element based upon the dilution percentage. We need to know the chemical composition of bot Taking on example of welding P11 to SS304 with SMAW can be estimated as follows: Cr (weld) = Cr (P11) * 0.15 + Cr (304) * 0.15 + Cr (309) * 0.70 All compositions in % Same formula can then be used for other elements. Words Dealing with dissimilar welding requires good knowledge of materials being joined and the critical issues associated with their welding. Typical guidelines have been provided within this document however service conditions and other codes requ herever stands mandatory. As a general rule, preheat and post weld heat treatment material requiring high temperature and holding time. Filler metal selection should be made considering all the factors defined above and t should suit the service conditions. These guidelines should be used only for getting a procedure qualified and not for applying them directly without qualification. ngineering Pulse © hat to consider when welding dissimilar materials resultant weld composition For dissimilar welding, resultant weld composition can be estimated if dilution is known. As told earlier, dilution is based upon the welding process being used. For SMAW, dilution is almost 30%. Resultant composition is measured for each critical element based upon the dilution percentage. We need to know the chemical composition of bot Taking on example of welding P11 to SS304 with SMAW can be estimated as follows: Cr (weld) = Cr (P11) * 0.15 + Cr (304) * 0.15 + Cr (309) * 0.70 Same formula can then be used for other elements. Dealing with dissimilar welding requires good knowledge of materials being joined and the critical issues associated with their welding. Typical guidelines have been provided within this document however service conditions and other codes requ As a general rule, preheat and post weld heat treatment material requiring high temperature and holding time. Filler metal selection should be made considering all the factors defined above and t should suit the service conditions. These guidelines should be used only for getting a procedure qualified and not for applying them directly without qualification. © 2013 hat to consider when welding dissimilar materials resultant weld composition For dissimilar welding, resultant weld composition can be estimated if dilution is known. As told earlier, dilution is based upon the welding process being used. For SMAW, dilution is almost 30%. Resultant composition is measured for each critical element based upon the dilution percentage. We need to know the chemical composition of both the metals being joined and the Taking on example of welding P11 to SS304 with SMAW Cr (weld) = Cr (P11) * 0.15 + Cr (304) * 0.15 + Cr (309) * 0.70 Same formula can then be used for other elements. Dealing with dissimilar welding requires good knowledge of materials being joined and the critical issues associated with their welding. Typical guidelines have been provided within this document however service conditions and other codes requ As a general rule, preheat and post weld heat treatment material requiring high temperature and holding time. Filler metal selection should be made considering all the factors defined above and the typical should suit the service conditions. These guidelines should be used only for getting a procedure qualified and not for applying them directly without qualification. hat to consider when welding dissimilar materials resultant weld composition For dissimilar welding, resultant weld composition can be estimated if dilution is known. As told earlier, dilution is based upon the welding process being used. For SMAW, dilution is almost 30%. Resultant composition is measured for each critical element based upon the dilution percentage. h the metals being joined and the Taking on example of welding P11 to SS304 with SMAW using E309, Cr (weld) = Cr (P11) * 0.15 + Cr (304) * 0.15 + Cr (309) * 0.70 Dealing with dissimilar welding requires good knowledge of materials being joined and the critical issues associated with their welding. Typical guidelines have been provided within this document however service conditions and other codes requirements should also be considered requirements material requiring high temperature and holding time. Filler metal selection should be made he typical resultant should suit the service conditions. These guidelines should be used only for getting a procedure qualified and not for applying them directly without qualification. Sales: sales@engineeringpulse.co.uk hat to consider when welding dissimilar materials For dissimilar welding, resultant weld composition can be estimated if dilution is known. As told earlier, dilution is based upon the welding process being used. For SMAW, dilution is almost 30%. Resultant composition is measured for each critical element based upon the dilution percentage. h the metals being joined and the , Chromium c Dealing with dissimilar welding requires good knowledge of materials being joined and the critical issues associated with their welding. Typical guidelines have been provided within this irements should also be considered requirements should be followed for the material requiring high temperature and holding time. Filler metal selection should be made resultant weld composition should suit the service conditions. These guidelines should be used only for getting a procedure Info: weld@weldpulse.com sales@engineeringpulse.co.uk For dissimilar welding, resultant weld composition can be estimated if dilution is known. As told earlier, dilution is based upon the welding process being used. For SMAW, dilution is almost 30%. Resultant composition is measured for each critical element based upon the dilution percentage. h the metals being joined and the filler metal composition Dealing with dissimilar welding requires good knowledge of materials being joined and the critical issues associated with their welding. Typical guidelines have been provided within this irements should also be considered should be followed for the material requiring high temperature and holding time. Filler metal selection should be made weld composition which should suit the service conditions. These guidelines should be used only for getting a procedure weld@weldpulse.com sales@engineeringpulse.co.uk For dissimilar welding, resultant weld composition can be estimated if dilution is known. As told earlier, dilution is based upon the welding process being used. For SMAW, dilution is almost 30%. Resultant composition is measured for each critical element based upon the dilution percentage. filler metal omposition in Dealing with dissimilar welding requires good knowledge of materials being joined and the critical issues associated with their welding. Typical guidelines have been provided within this irements should also be considered should be followed for the material requiring high temperature and holding time. Filler metal selection should be made which should suit the service conditions. These guidelines should be used only for getting a procedure weld@weldpulse.com sales@engineeringpulse.co.uk