Le matériau | GMW3399 CR780T/450Y-TR | |||||||
Composition chimique | C% | Mn% | Al% | Si % | P% | S% | Cu% | B% |
≤0.30 | ≤2.5 | 0.015-2.00 | ≤2.2 | ≤0.090 | ≤0.015 | ≤0.20 | ≤0.006 | |
Propriété mécanique | S | TS(MPa) | EL (%) | n | ||||
450-570 | ≥ 780 | ≥ 21 |