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Invar 36 (FeNi36) / 1.3912

Invar 36® is a nickel-iron, low expansion alloy that contains 36% nickel and possesses a rate of thermal expansion approximately one-tenth that of carbon steel. Alloy 36 maintains nearly constant dimensions over the range of normal atmospheric temperatures, and has a low coefficient of expansion from cryogenic temperatures to about 500°F. This nickel iron alloy is tough, versatile and retains good strength at cryogenic temperatures.

Material Data Sheet

ASTM F1684
UNS K93603

Main fields of application

Invar 36 is used mainly for:

  • Aircraft controls
  • Optical & laser systems
  • Radio & electronic devices
  • Composite forming tools & dies
  • Cryogenic components

 

Chemical composition of Invar 36

Ni C Si Mn S
35.5 - 36.5 0.01 max 0.2 max 0.2 - 0.4 0.002 max
P Cr Co Fe  
0.07 max 0.15 max 0.5 max Balance  

Mechanical properties of Invar 36

Metallurgical Condition Annealed, Descaled  
Yield Strength KSI (MPa) 38 (260) Max
Tensile Strength KSI (MPa) 63 (430) Max
Hardness HB 135
Elongation 50mm >30% (Typical 40%)

Delivery program

Various sizes and tolerances available upon request.

Material Outlet by Hempel

ECONOXX.com offers buyers a new and uncomplicated procurement channel, which also includes small quantities and materials in special alloys at favourable conditions.

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Product Count

Coil (36)

Coil slit strip (26)

Coil slit strip Coil slit strip
26

Sheets & plates (1688)

Sheets & plates Sheets & plates
1688

Tubes round (79)

Tubes round Tubes round
79

Full material square-cut (18)

Full material square-cut Full material square-cut
18

Tubes quadratic or rectangular (3)

Tubes quadratic or rectangular Tubes quadratic or rectangular
3

Hexagon-Shape (13)

Hexagon-Shape Hexagon-Shape
13

U-Shape (1)

U-Shape U-Shape
1

Wire Coil (3)

Wire Coil Wire Coil
3

Flat Steel (9)

Flat Steel Flat Steel
9

Cuts, fittings, other shapes (21)

Cuts, fittings, other shapes Cuts, fittings, other shapes
21

Disk (3)

Round bars (269)

Round bars Round bars
269

Ingots "square" (8)

Ingots "square" Ingots "square"
8

Contact us

Marcel Zuber
Marcel Zuber
Business Unit Manager Services, Aerospace, Medical & Watch

Request offer at detailpage

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