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Invar 36 - UNS K93600 Sheet

Invar 36® (Alloy 36) Sheet is a 36% nickel-iron alloy that exhibits a near zero rate of thermal expansion which is roughly one tenth the expansion rate of carbon steel at temperatures from around -100°C up to 200°C.

Along with this very low coefficient of linear thermal expansion over a broad range of temperatures, up to around 200 °C. Invar 36 Sheet retains superior strength and toughness at cryogenic temperatures, making it suitable for a variety of low temperature applications. Invar 36 is Available from stock in the flowing specifications ASTM F-1684, UNS K93603, UNS K93050

Invar 36 Sheet is available in two variations. One is the conventional Invar alloy, used generally for its optimum low expansion properties. The second is a variation of the basic alloy known as Free-Cut Invar 36® alloy (UNS K93050). This alloy has shown improved machinability for applications where high productivity is important. It is also a 36% nickel-iron alloy, but with a small addition of selenium to enhance machinability.

Invar 36® (Alloy 36) Sheet is a 36% nickel-iron alloy that exhibits a near zero rate of thermal expansion which is roughly one tenth the expansion rate of carbon steel at temperatures from around -100°C up to 200°C. Along with this very low coefficient of linear thermal expansion over a broad range of temperatures, up to around 200 °C. Invar 36 retains superior strength and toughness at cryogenic temperatures, making it suitable for a variety of low temperature applications. Invar 36 is Available from stock in the flowing specifications ASTM F-1684, UNS K93603, UNS K93050

Features

  • Resists erosive wear
  • Good impact & thermal shock resistance
  • Resists heat & oxidation
  • Abrasion & corrosion resistant
  • Resists seizing & galling
  • Good strength
  • Meets UNS R30006 specifications

Applications

  • Positioning devices
  • Bimetal thermostats
  • Advanced composite molds for aerospace industry
  • Dimensionally stable instruments and optical devices
  • Containers for LNG tankers

Specifications

  • UNS : K93603
  • ASTM : F1684
  • Outside Diameter : 0.25mm (0.010") up to 16.00mm (0.625")

Chemical Composition

Weight % Ni Fe C Mn P S Si Cr Mo Co
Invar 36 35-38 Rem 0.10 max 0.06 max 0.025 max 0.025 max 0.35 max 0.50 max 0.50 max 1.0 max

Physical Properties

Material Condition Ultimate Tensile Strength Yield Strength 0.2 % Elongation (%)
psi MPa psi MPa
Invar 36 Annealed 71,000 490 35,000 240 42

Mechanical Properties

Properties Metric Imperial
Tensile strength (annealed prior to test) 490 MPa 71100 psi
Yield strength (annealed prior to test, @strain 0.200%) 240 MPa 34800 psi
Elongation at break (annealed prior to test) 42.0% 42.0%

Calico Metal Ind Pvt Ltd export products to countries like UAE, Bahrain, Italy, Indonesia, Malaysia, United States, Mexico, Chine, Brazil, Peru, Nigeria, Kuwait, Jordan, Dubai, Thailand (Bangkok), Venezuela, Iran, Germany, UK, Canada, Russia, Turkey, Australia, New Zealand, Sri Lanka, Vietnam, South Africa, Kazakhstan & Saudi Arabia.

Nickel Alloys Materials