UNS #N07080

80A is a nickel-base, high-temperature alloy containing a high percentage of chromium characterized by excellent creep-resisting properties, high oxidation resistance, and high resistance to fatigue under very arduous conditions. Aluminum and titanium additions serve as hardening agents. 80A is heat treatable using gamma-prime precipitation. The creep-resisting properties of 80A are adversely affected by cold working the alloy following heat treatment, the effect being to cause an increase in the rate creep under given conditions. This has led to failure by rupture in a shortened time at a large elongation. The properties of the alloy may be restored by re-heat treatment.

Type Analysis

  • Carbon (Maximum) 0.06
  • Silicon (Maximum) 0.35
  • Nickel (Nominal) Balance
  • Titanium (Nominal) 2.35
  • Manganese (Maximum) 0.35
  • Sulfur (Maximum) 0.007
  • Chromium (Nominal) 20
  • Cobalt (Nominal) 1
  • Iron (Nominal) 0.75
  • Aluminum (Nominal) 1.25
  • Copper (Nominal) 0.05


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Applicable Specifications

  • ASME SB637
  • ASTM B637





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