Patent ID: 11945503
Assignee: ARCELORMITTAL
Field: Machine tools (Mechanical engineering)
Classification: CPC B  C | IPC B  C

Claim 30:
31. The welded steel blank as recited in claim 16, wherein for one of the precoated sheets, the steel of the steel substrate comprises, by weight:
0.040%≤C≤0.100%
0.80%≤Mn≤2.00%
Si≤0.30%
S≤0.005%
P≤0.030%
0.010%≤Al≤0.070%
0.015%≤Nb≤0.100%
Ti≤0.080%
N≤0.009%
Cu≤0.100%
Ni≤0.100%
Cr≤0.100%
Mo≤0.100%
Ca≤0.006%,
a rest being iron and impurities resulting from manufacturing; and
wherein for the other of the precoated sheets, the steel of the steel substrate comprises, by weight:
0.10%≤C≤0.5%
0.5%≤Mn≤3%
0.1%≤Si≤1%
0.01%≤Cr≤1%
Ti≤0.2%
Al≤0.1%
S≤0.05%
P≤0.1%
B≤0.010%
a rest being iron and impurities resulting from manufacturing.