effect of alloying elements in steel
- 1. EFFECT OF ALLOYING ELEMENTS IN STEEL (Mn, Si, Cr, Mo, V, Ti, Pb, Cu, Al & W)
- 2. MANGANESE (Mn) • Alloy Elements in the STEELS: 0.3 – 2% • EFFECTS: – Increase the Strength and Hardness. – Increases hardenability – Lower the critical temperature range – Promotes an AUSTENTIC Structure • APPLICATIONS: – up to 2% manganese- Shafts, Gears, and connecting rod
- 3. SILICON (Si) • Alloy Elements in the STEELS: 2% • EFFECTS: – Improve the electrical and magnetic properties – Improves Oxidation resistance – Strengthened the low alloy steels – Increases Hardanebility • APPLICATIONS: – Transformer cores, IC engine valves( high temperature reistance)
- 4. CHROMIUM (Cr) • Alloy Elements in the STEELS: 0.3 – 4% • EFFECTS: – Increase the corrosion and oxidation resistance. – Increases hardenability – Increases high temperature strength – Resist abrasion and wear • APPLICATIONS: – Medium & high carbon steels for gears , Axles, Shafts, Springs, Ball bearings, Metal working rolls.
- 5. MOLYBDENUM (Mo) • Alloy Elements in the STEELS: 0.1 – 0.5% • EFFECTS: – Improve high temperature creep resistance – Reduces temper brittleness – Stabilizes carbides – Increases hardenability • APPLICATIONS: – High speed Tool steels, and creep resistance steels.
- 6. VANADIUM (V) • Alloy Elements in the STEELS: 0.1 – 0.3% • EFFECTS: – Stabilizes carbides – Raises the softening temperature of hardened steels – Increase strength while retaining Ductility – Promotes fine Grain size. • APPLICATIONS: – High speed steels
- 7. COPPER (Cu) • Alloy Elements in the STEELS: 0.2-0.5% • EFFECTS: – Increases strength and corrosion resistance • APPLICATIONS: – Corrosion resistance in Architectural steels