Patent ID: 8722203

Claim:
A steel part, manufactured by a process comprising: (i) heating a steel blank; (ii) forming the steel blank to obtain a formed blank; and (iii) cooling the formed blank by holding the formed blank within a tool, thereby obtaining the steel part, wherein the steel blank comprises a steel comprising, Fe and, by weight: 0.040%≦C≦0.100%; 0.80%≦Mn≦2.00%; Si≦0.30%; S≦0.005%l; P≦0.030%; 0.010%≦Al≦0.070%; 0.015%≦Nb≦0.100%; 0.030%≦Ti≦0.080%; N≦0.009; Cu≦0.100%; Ni≦0.100%; Cr≦0.100%; Mo≦0.100%; Ca≦0.006%, wherein a microstructure of the steel of the part, after the cooling (iii), comprises at least 75% equiaxed ferrite, martensite in an amount not less than 5% but not exceeding 20%, and bainite in an amount not exceeding 10%, expressed as surface fractions.