Specification for cobalt-chromium-tungsten-nickel-manganese heat-resisting alloy billets, bars and forgings (cobalt base Cr 20, W 15, Ni 10, Mn 1.5)

Specification for cobalt-chromium-tungsten-nickel-manganese heat-resisting alloy billets, bars and forgings (cobalt base Cr 20, W 15, Ni 10, Mn 1.5)

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1   Scope

This British Standard specifies requirements for cobalt-chromium-tungsten-nickel-manganese heat-resisting alloy supplied in the following forms.
  1. a) Bars and extruded sections for machining: annealed, designation HR 40A.
  2. b) Billets and bars for forging: hot or cold worked and subsequently machined or ground, designation HR 40B.
  3. c) Forgings: annealed, designation HR 40C.