High Expansion 72

High Expansion 72 is a non-ferrous manganese-copper-nickel alloy that will anneal fully at temperatures between 1202°F and 1472°F (650 and 800°C) because of its low melting point. Severe oxidation at high temperatures due to its high manganese content, this alloy is usually annealed in protective atmospheres or vacuums.

Type Analysis

  • Carbon (Maximum) 0.02
  • Nickel (Nominal) 10
  • Manganese (Maximum) 72
  • Iron (Nominal) Balance
  • Copper (Nominal) 18


Thermostat bimetal applications

Applicable Specifications



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