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Specialty Products / Superalloys & Metals / Superalloys & High-Performance Alloys / Invar 36®

Superalloys & High-Performance Alloys

Invar 36®

Invar 36® is the reference alloy for low thermal expansion at near-ambient temperature. It is used where dimensional stability matters more than corrosion resistance or high-temperature strength. EQI supplies Invar 36 for tooling, measuring, and precision assemblies.

INVAR® is a registered trademark of Aperam Alloys Imphy.

  • UNS K93600
  • Low-expansion iron-nickel alloy
  • Also known as: 36 alloy

Request a Quote for Invar 36®

To get started, request a quote using the form below and we will get back to you. Please note that the quantity needed to quote or supply a specific alloy grade is typically 500-1,000 lbs, depending on the material.

Key Properties

  • Very low coefficient of thermal expansion
  • Excellent dimensional stability through temperature changes
  • Good for tooling, fixtures, and measuring hardware
  • Useful in cryogenic and precision assemblies
  • Chosen where movement with temperature must be minimized

Composition

Nickel 36
Iron Balance
Carbon 0.05 max
Manganese 0.6 max
Silicon 0.35 max

Applications

Common industries and end-use applications include Aerospace & Defense, Electronics & Semiconductor Equipment, and Industrial Equipment & Machinery.

  • Precision tooling and dies
  • Composite layup tools
  • Measuring instruments and gage frames
  • Cryogenic vessel components
  • Optical and electronic support structures

Request a Quote

Whether you're sourcing raw material or need a manufactured component produced from a specialty alloy, the EQI team can help.

Why Choose EQI

Your Single Source for Specialty Alloys and Precision Manufacturing

EQI combines specialty alloy sourcing with manufacturing expertise, allowing customers to move from raw material supply to finished components through a single partner.

Our team supports OEMs and manufacturers by sourcing difficult-to-procure alloys and producing components for demanding applications.

Key Advantages

  • Global sourcing and foundry partnerships
  • Expertise in high-temperature and high-performance alloys
  • Precision machining and finished component manufacturing
  • Reliable lead times and consistent quality
  • Inventory management and just-in-time delivery programs
  • Engineering support for complex alloy applications