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Invar 42® (alloy 42, Nilo 42®) / 1.3917 / UNS K94100

Invar 42® is a nickel-iron alloy that contains 41% nickel and exhibits excellent controlled expansion qualities and is used primarily for controlled expansion and magnetic applications. Invar 42® is also highly effective in magnetic applications. It can be hot formed, cold formed or machined. Nilo 42 possesses many of the qualities of the other Invar nickel iron alloys. It is effective in extreme temperatures ranging from -32C to 275C.

Material Data Sheet

ASTM F30
UNS K94100

Main fields of application

Invar 42 is used mainly in:

  • Transformer & capacitor bushings
  • Automotive & industrial lamps
  • Electronic tubes
  • Glass-to-metal applications
  • Ceramic-to-metal Applications

 

Chemical composition of Invar 42

Ni Fe
42 Balance

Mechanical properties of Invar 42

Metallurgical Condition Annealed, Descaled  
Yield Strength KSI (MPa) 36 (248)
Tensile Strength KSI (MPa) 71 (490)
Hardness HB 130
Elongation 50mm >40

Delivery program

Various sizes and tolerances available upon request.

Material Outlet by Hempel

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