Specification for nickel-chromium- iron-molybdenum-cobalt-tungsten heat-resisting alloy billets, bars, forgings and parts (nickel base, Cr 21.7, Fe 18.5, Mo 9, Co 1.5, W 0.6)

Specification for nickel-chromium- iron-molybdenum-cobalt-tungsten heat-resisting alloy billets, bars, forgings and parts (nickel base, Cr 21.7, Fe 18.5, Mo 9, Co 1.5, W 0.6)

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1   Scope

This British Standard specifies requirements for nickel-chromium-iron-molybdenum-cobalt-tungsten heat-resisting alloy supplied in the following forms, and as parts.
  1. a) Bars and extruded sections for machining: annealed, designation HR 6A.
  2. b) Billets and bars for forging: hot or cold worked and subsequently machined or ground, designation HR 6B.
  3. c) Forgings: annealed, designation HR 6C.