The SUM22 chemical composition and mechanical properties

The SUM22 cutting steel chemical composition:

Carbon C: 0.10 ~ 0.18
Silicon Si: ≤ 0.15
Manganese Mn: 0.80 ~ 1.20
Sulfur S: 0.23 ~ 0.33
Phosphorus P: 0.05 ~ 0.10

SU22 cutting steel mechanical properties:

Tensile strength σb (MPa): (hot-rolled) 390 to 540; (cold drawn) steel thickness or diameter of 8 to 20: 530 to 755;> 20

30 to 30 hours: 510 to 735;>: 490 to 685
Elongation δ5 (%): (hot-rolled) ≥ 22; (cold rolled) ≥ 7.0
Reduction of area ψ (%): (hot-rolled) ≥ 36
Hardness: (hot) ≤ 170HB; (cold-drawn) 152 ~ 217HB
● Heat treatment and microstructure specifications:
● Delivery status: hot-rolled or cold-drawn state delivery, delivery status should be specified in the contract.