Super Invar 32-5

UNS #K93500

Super Invar 32-5 is a magnetic, austenitic, solid solution alloy containing iron, nickel and cobalt designed to provide minimum thermal expansion at room temperatures. This alloy also exhibits austenite stability to service temperatures at least -67°F (-55°C) and thermal expansion properties less than those of Invar 36 (36% nickel-iron) when used in the -67/203°F (-55/95°C) temperature range.

Type Analysis

  • Carbon (Maximum) 0.02
  • Silicon (Maximum) 0.25
  • Nickel (Nominal) 32
  • Manganese (Maximum) 0.4
  • Cobalt (Nominal) 5.5
  • Molybdenum (Nominal) Balance

Applications

Structural components for supports and substrates in optical and laser systems requiring precision measurements, wave guide tubes and other systems requiring metals in conjunction with low expansion glass/quartz assemblies.

Applicable Specifications

  • ASTM F1684

Billet

Flats

Rounds

Square

Strip

Wire

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