Patent ID: 9689050
Date: 2017-06-27
CPC Classifications: B32B,C21D,C22C,C23C,Y10T

Claim:
1. A rolled steel sheet or blank having a chemical composition comprising, expressed in percent by weight: C≦0.1%; 0.5%≦Mn≦7%; 0.5%≦Si≦3.5%; 0.5%≦Ti≦2%; 2%≦Ni≦7%; Al≦0.10%; Cr≦2%; Cu≦2%; Co≦2%; Mo≦2%; S≦0.005%; P≦0.03%; Nb≦0.1%; V≦0.1%; B<0.005%; and N≦0.008%, the levels of silicon and titanium being such that: a remainder of the composition including iron and unavoidable impurities resulting from processing.