Creusabro Dual Datasheet
- 1. Industeel Creusabro®Dual A high performance wear resistant steel ® Industeel TrademarkCreusabro®Dual- 15.05.2013 issue - page 1 Creusabro®Dual is an advanced abrasion-resistant steel additionally alloyed with high titanium content (0.6%). This innovative grade is mainly dedicated to severe sliding wear conditions in service for applications where conven- tional water quenched steels (500HB, 550HB), hardfacing plates or hard-cast parts are traditionally implemented. Compared to Creusabro®8000, Creusabro®Dual capita- lizes upon an innovative metallurgical concept, based on a specific chemical analysis. Furthermore, it is produced by Oil Quenching, which reduces the level of the residual stresses that is encountered within the plate after heat treatment (with more drastic quenching methods water quenching). The outstanding extra wear resistance, severe abrasion combined with high impact cycle load, is mainly due to the contribution of the following hardening phenomena : - an homogeneous precipitation of extra hard primary titanium carbides in the steel matrix leads to a significant improvement of the sliding wear resistance in extreme service conditions. - a superficial hardening following a very efficient work hardening capability in service, governed by a metallurgic phenomenon called TRIP effect (Transformation Induced by Plasticity). - in addition to a high stress grinding abrasion resistance, an ability of forming also remains within reasonable limits and allows the processing of curved parts (Fig 1, fig 2 : Creusabro®Dual, 2000x300x10mm, Rint=1000mm) Standard Chemical analysis (indicative values weight %) Mechanical properties - Typical values Creusabro®Dual C Mn Ni Cr Mo S Ti ≈ 0.40 ≈1.30 ≈ 0.45 ≈ 0.70 ≤ 0.340 ≤0.002 ≈ 0.60 Hardness ≈ 450/490 HB Hardness (HB) Y.S. 0.2 MPa (KSI) UTS MPa (KSI) El 5.65 % KCVL-20° (-4°F) J (ft.lbs) E GPa 480 1200 (174) 1630 (236) 10 18 (13) 205 Fig 1: Rolling Fig 2: Bending (successive folds) No other competitor offers wear resistant steel at this level of hardness 500HB, with such high abrasion resis- tance combined with high resistance to cracking in ser- vice! Vulcan Stainless: Exclsuive Distributor of Creusabro® Wear Products
- 2. Creusabro®Dual - 15.05.2013 issue - page 2 Extremely hard primary titanium carbides homogeneously embedded in the steel matrix Abrasive test followed ASTM G65 standard Abrasive wear test results 28 8 200 300 400 500 600 700 800 12 16 20 24 Hardness Brinell of sample Abrasionresistantratio WQ400 WQ 450 WQ=WaterQuenched WQ 500 Physical properties Metallurgical concept 20/100°C 68/212°F 20/200°C 68/392°F 20/300°C 68/572°F 20/400°C 68/732°F 20/500°C 68/932°F 11.2 12.0 12.5 13.2 13.8 Wear resistance depends not only on the hardness of the steel at delivered state, but also on other properties, such as crack resistance, work hardening effect, strength, duc- tility, softening resistance, etc. The performance in service of given wear resistant steel is strongly influenced by the microstructure obtained after thermal processing. In the case ofCreusabro®Dual , a significant improvement of the wear resistance in service is mainly due to the fol- lowing properties : "TRIP effect" : TRansformation Induced by Plasticity. As its initial structure not fully martensite (a mix of mar- tensite, bainite and retained austenite), Creusabro®Dual has the ability to work-harden when submitted to local plastic deformation in service. Plastic deformation induces a sur- face hardening phenomenon by transformation of retained austenite into fresh and very hard martensite while the material remains ductile underneath, making it most effec- tive to withstand both abrasion and heavy impact in ser- vice. Density at +20°C (68°F) : 7.85 kg/dm3 Titanium carbides The extreme abrasion resistance versus the conventional wear resistant steels (500HB, 550HB...) is gained by the presence of the primary titanium carbides which are pre- cipitated during the first stage of the solidification (already present within the semi-products, slab or ingot, before rolling and heat treatment). These titanium car- bides exhibit an average hardness of 3000HV (Vickers hardness) and therefore create numerous hard spots in the steel matrix like crushed gravel in concrete. 500 550 480 450 as supplied In-service conditions Hardness(HB) + 70 HB in-service Work hardening effect 500 HB water quenched steel Dual In addition, the super ductility of the retained austenite contributes to improve the lifetime in service by allowing larger micro shearing and thus delays the ultimate tearing of metal particles from the surface of the material exposed to the abrasive. On this typical microstructure of Creusabro® grades, the retained austenite grains revealed by means of Klemm reactive etching appear in white. When subjected to plastic deformation in service (impact or high pressure), Creusabro®Dual takes advantage of a surface hardening about 70 HB, wha- tever the applied strain level. Properties at high temperature Chemical composition of Creusabro®Dual, and specially chromium, molybdenum and huge titanium contents, give a high softening resistance to the material. This property allows using Creusabro®Dual in hot service conditions, at a maximum of 450°C (840°F) while conventional 500 HB water quenched steels are limited to 250°C (480°F). Dual Expansion coefficient (x 10-6 .°C-1 )
- 3. Creusabro®Dual - 15.05.2013 issue - page 3 Processing Cutting All classical thermal processes (gas-plasma-laser) can be used. Plasma/laser processes are specially recommended. They provide increased precision and cutting aspect and induce a thinner Heat Affected Zone (HAZ). Welding Creusabro®Dual can be welded with all classical processes : manual (SMAW), semi-automatic under gas protection (GMAW), automatic under flux (FCAW). Welded areas shall be clean, free of grease, water, oxides... Electrodes and flux shall be dried according to supplier’s recommendations. For welds without preheating, an austenitic welding wire shall be used. Following welding conditons have been used in our weld tests If you are using a ferritic welding product, preheating is strongly recommended in order to avoid cold cracking defects... The following welding conditions have been used in our weld tests Solid Wire Gas Trademark LNM 307 ATAL 5A Standard name ER307 / G18-8-Mn M21 Supplier Lincoln Air Liquid Diameter/Composition Ø 1.2 mm 82% Ar+18% C02 Automatic/Manual automatic Welding position PB Heat Input (KJ/cm) 12 - 18 Voltage (V) 26 - 28 Amperage (A) 220-270 Travel speed (cm/min) 25 - 35 Polarity DC+ Wire feed rate (m/min) 10 - 12 Gas flow rate (l/min) 18 - 24 Stick-out (mm) 10 - 20 Preheating (°C) 20°C Interpass temp. (°C) 40°C Solid Wire Gas Trademark Nertalic 70A ARCAL 12 Standard name A5.18 / G3Si1 M12 Supplier SAF Air Liquide Diameter/Composition Ø 1.2 mm 98% Ar+2% C02 Automatic/Manual automatic Welding position PB Heat Input (KJ/cm) 12 - 18 Voltage (V) 26 - 28 Amperage (A) 220-270 Travel speed (cm/min) 25 - 30 Polarity DC+ Wire feed rate (m/min) 7.5 Gas flow rate (l/min) 18 - 24 Stick-out (mm) 10 - 20 Preheating (°C) 160°C Interpass temp. (°C) 180°C Forming and Machining Refer to the Creusabro®Dual guideline Whatever service conditions are, the original metallurgical concept of Creusabro®Dual gives the material an improve of its performance in terms of wear resistance and process ability, compared to other conventional 500 HB water quenched steels, especially for extreme applications, where severe abrasion conditions are combi- ned with huge impact, heat or moderate corrosion. Service life
- 4. Creusabro®Dual - 15.05.2013 issue - page 4 For any information Contact: Vulcan Stainless Sydney Office 23-47 Percival Road Smithfield, NSW 2164 Ph 02-9828-0601 email enquiries to stainlessplate.nsw@vulcansteel.com.au Examples of three areas of industry where Creusabro Dual can make the different versus the conventional solutions... Counter-Blades Mines & Quarries Extra large fans (XXL), extreme service conditions (blade protection) - cement plants - incineration plant (waste treatment technology) - ore processing - iron making plants Screens (hot working conditions) - iron making plant (blast furnace) - sintering plant - coking plant In general, for complex applications where the wear phe- nomenon is combined with high temperature or corrosion, the service conditions should be carefully investigated in order to provide adequate solution... Bucket liners for excavator, shovel, loader, dozer, ... Cutting edges, stiffeners... for different types of buckets Truck tray body liners Wear parts for primary and secondary crushers Vibratory feeder liners Chute liners Hopper liners Screens Trommels Pipe elbows Cyclones Deflectors Grinder liners (SAG Mill) Demolition tools (recycling) Pipes for dredging Blade liners for heavy duty fans... 1. This technical data and information represents our best knowledge at the time of printing. However, it may be subject to some slight variations due to our ongoing research programme on abrasion resistant grades. We therefore suggest that information be verified at time of enquiry or order. Furthermore, in service, real conditions are specific for each application. The data presented here is only for the purpose of description, and may only be considered as guarantees when ou company has given written formal approval. 2. CREUSABRO®DUAL has been developed specifically for its abrasion resistance. Customer’s usage of CREUSABRO®DUAL for any other purposes, not directly resulting from its abrasion resistance, is his own prerogative but won’t, in any way, engage INDUSTEEL’s responsability. In addition to the recommendations given in this document, customer will have to follow the industry standard quality rules for any processing operation performed on this material. Applications Dimensional programme The properties of Creusabro®Dual clearly indicate that this steel has many potential applications where an extreme abrasion resistance combined with high resis- tance to cracking is required in service, such as: Sizes - mm (inch) Thickness - mm (inch) 6 to 50 mm (0.236 to 1.968) 2000 x 6000 (78.740 x 236.220) xx 2500 x 8000 (98.425 x 314.960) xx xx = optimum sizes Indicative dimensional programme Others dimensions available on request.