Patent ID: 8551397

Claim:
A steel composition after ElectroSlag Remelting (ESR) or Vacuum Arc Remelting (VAR) remelting comprising: carbon: 0.37-0.42, manganese: 0.06-0.130, silicon: 0.04-0.120, nickel: 3.00-4.00, chrome: 1.30-1.80, molybdenum: 0.70-1.00, vanadium: 0.25-0.30, aluminium: ≦0.015 iron: balance in percentages by weight of the total composition; dinitrogen <70 ppm, dioxygen <30 ppm and dihydrogen <2 ppm; and a molybdenum to vanadium ratio from 2.3 to 4.