Effect of alloy elements to steel properties

Products / Technical tables /

Alloy element Hardness Strength Yield strength Elongation Reduction of Cross Sectional Area Impact strength Elasticity High temperature strength Coolling speed Cementide forming Abrasion resistance Forging ability Machinability Oxide tendency Corrosion resistance
Si ↑ ↑ ↑↑ ↓ ~ ↓ ↑↑↑ ↑ ↓ ↓ ↓↓↓ ↓ ↓ ↓ U
Mn* ↑ ↑ ↑ ~ ~ ~ ↑ ~ ↓ ~ ↓↓ ↑ ↓ ~ U
Mn** ↓↓↓ ↑ ↓ ↓↓↓ ~ U U U ↓↓ U U ↓↓↓ ↓↓↓ ↓↓ U
Cr ↑↑ ↑↑ ↑↑ ↓ ↓ ↓ ↑ ↑ ↓↓↓ ↑↑ ↑ ↓   ↓↓↓ ↓↓↓
Ni* ↑ ↑ ↑ ~ ~ ~ U ↑ ↓↓ U ↓↓ ↓ ↓ ↓ U
Ni** ↓↓ ↑ ↓ ↑↑↑ ↑↑ ↑↑↑   ↑↑↑ ↓↓     ↓↓↓ ↓↓↓ ↓↓ ↑↑
Al U U U U ↓ ↓ U U U U U ↓↓ U ↓↓ U
W ↑ ↑ ↑ ↓ ↓ U U ↑↑↑ ↓↓ ↑↑ ↑↑↑ ↓↓ ↓↓ ↓↓ U
V ↑ ↑ ↑ ~ ~ ↑ ↑ ↑↑ ↓ ↑↑↑↑ ↑↑ ↑ U ↓ ↑
Co ↑ ↑ ↑ ↓ ↓ ↓ U ↑↑ ↑↑ U ↑↑↑ ↓ ~ ↓ U
Mo ↑ ↑ ↑ ↓ ↓ ↑ U ↑↑ ↓↓ ↑↑↑ ↑↑ ↓ ↓ ↑↑ U
S U U U ↓ ↓ ↓ U U U U U ↓↓↓ ↑↑↑ U ↓
P ↑ ↑ ↑ ↓ ↓ ↓↓↓ U U U U U ↓↓↓ ↓↓↓ ↓↓ ↑↑
  • * - Perlitic steels
  • ** - Austenitic steels
  • ↑ = Increases
  • ↓ = Decreases
  • ~ = Unchangeable
  • U = Unknown-Unimportant