Specification for nickel-chromium-cobalt-aluminium-molybdenum-titanium heat-resisting alloy billets, bars, forgings and parts (nickel base, Cr 15, Co 14. 2, Al 5, Mo 4, Ti 4)
This British Standard specifies requirements for nickel-chromiumcobalt-aluminium-molybdenum-titanium heat‑resisting alloy supplied in the following forms, and as parts.
a) Bars and extruded sections for machining: solution treated, designation HR 4A.
b) Billets and bars for forging: hot or cold worked and subsequently machined or ground, designation HR 4B.
c) Forgings: solution treated, designation HR 4C.