Patent ID: 8101004

Claim:
A manufacturing process for a steel blank comprising electroslag remelting (ESR—ElectroSlag Remelting) of an electrode, said blank having a composition comprising, after ESR: Carbon: 0.35-0.43, Manganese: <0.20, Silicon: <0.20, Nickel: greater than 3.00 and less than or equal to 4.00, Chrome: 1.30-1.80, Molybdenum: 0.70-1.00, Vanadium: 0.20-0.35, Iron: balance in percentages by weight of the total composition, and including dinitrogen, dioxygen and dihydrogen, wherein the composition of the slag for ESR comprises: CaF 2 : 60-70; Al 2 O 3 : 10-20; CaO: 10-20; SiO 2 : 5-10; in percentages by weight of the total composition of the slag.