Specification for precipitation hardening chromium-nickel-copper-molybdenum steel castings (950 MPa) (Cr 14.0, Ni 4.5, Cu 2.5, Mo 1.5), Specification for precipitation hardening chromium-nickel-copper- molybdenum steel castings (950 MPa) (Cr 14.0, Ni 4.5, Cu 2.5, Mo 1.5)