The SUM42 chemical composition and mechanical properties

Chemical Composition

Carbon C: 0.37 ~ 0.45
Silicon Si: 0.15 ~ 0.35
Manganese Mn: 1.20 ~ 1.55
Sulfur S: 0.02 ~ 0.30
Phosphorus P: ≤ 0.05

Mechanical Properties

After high-temperature tempering tensile strength σb (MPa): (hot-rolled) 590 to 735; (cold drawn state) 590 to 785
Elongation δ5 (%): (hot-rolled) ≥ 14; (cold rolled) ≥ 17
Reduction of area ψ (%): (hot-rolled) ≥ 20
Hardness: (hot) ≤ 207HB; (cold-drawn) 179 ~ 229HB
Delivery Status: Delivery to the hot-rolled or cold-drawn state, the delivery status should be specified in the contract.