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Invar 36

Shapes Available

  • Coil
  • Plate
  • Round Bar
  • Sheet
  • Square Bar


  • Aerospace
  • Electrical
  • Manufacturing
  • Medical

Industry Names

  • Invar 36
  • Invar
  • Alloy 36


  • Exotic
  • Specialty Steel


  • ASTM B753 (Hot Rolled Plate)
  • ASTM F1684
  • MIL I 230IIC Class 7 (Ground Plate and Cold Rolled Sheet)
  • MIL S 16598 Available in rod diameters .500 and up


  • Laser Part Applications
  • Molds for Composite Aircraft Parts
  • Precision Condenser Plates
  • Resonant Cavities for Radars
  • Special Joints and Washers
  • Thermostatic Bimetals


  • Excellent Corrosion Resistance
  • High Strength

Invar 36 is a low expansion nickel-iron alloy that contains 36% Nickel. Invar 36 has a thermal rate of expansion approx 1/10 of Carbon Steel at temps above 400°F. Invar 36 is used in electronic and radio devices where one must keep dimensional changes to a minimum.

Invar 36 is available in round bar, sheet, plate and strip. Invar 36 can be machined under similar processes to austenitic stainless steels.

Please contact us to request a quote. We specialize in hard to find material.

We work closely with many manufacturers in the aerospace & defense industry. We work with NADCAP approved heat treaters and testing laboratories. We can supply DFARS compliant material.

Metal Properties
Hardness Max, Brinell 70
Ultimate Tensile Strength 85 ksi
Chemical Composition
Fe- Bal

DISCLAIMER: The information provided on this Web site, technical or otherwise, is merely for informational purposes, and is not intended to serve as a guide, manual, instructions, or any kind reference for proper safety procedures or material purchasing. Michlin Metals makes no warranty, express or implied, based on the statements on this Web site and, as such, will not be liable for any damages, either direct or indirect, including but not limited to consequential damages, such as damages for loss of profits, that may arise based on reliance on the information provided on this Web site. Some information has been referenced from reliable industry sources. Tradenames listed are the sole property of the tradename owners. Michlin Metals typically provides branded products through its relationships with mills and authorized re-sellers. Equivalent non-branded product is sometimes also available through certified sources of such products. Michlin Metals will never substitute non-branded product when branded product is requested.

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