Rare Metal(Indium,Nickel,Molybdenum,etc.)

Invar alloy 4J36 UNS K93600 ASTM F1684 DIN 1.3912 Ni36

Shanghai Metal Corporation is a leading invar alloy manufacturer and supplier.

Invar alloy---National standard called expansion alloy, is a kind of nickel and iron that contains 36% of nickel,63.8% of iron and 0.2% of carbon, its low thermal expansion coefficient, can keep fixed length in wide temperature range.


  • Alloy

    1J33,3J01,3J9,4J29,4J32.4J33,Invar36,4J45.FeNi50.

    Characteristic

    Iron-nickel glass sealing alloys have certain lin-ear expansion coefficients within a certain range oi temperature.

  • Soft glasses

    Ceramics in the eletr-vacuum industry

    Various instrumens components

    Magnetic shunt compensatory element

    Ring laser gyroscope

    Standard part swing

Main Technical Paraments of Invar 36-Bar:

UNS 

W.Nr 

K93600

1.3912

Chemical composition                                      

Grade

%

Ni

Fe

C

Mn

Si

Invar 36

Min

35

Bal.

 

0.2

 

 

 

Max

37

0.05

0.6

0.3

0.02

0.02

m value at 20°C)                                                           

Tensile Strength

σb/MPa

Yield Strength

σp0.2/MPa

Elongation

σ5 /%

490

240

42

 

The Average Linear Expansion Coefficient of Invar 36-Bar

 

Alloy

Grades

Specimen heat treatment system

The average linear expansion coefficient a,10-6/  

20-100 

20-300  

 

Invar36

Will be semi-finished specimen heated to 840 ± 10 , insulation 1h, water quenching, and then processed into finished specimen, at 315 ± 10 , insulation 1h with the furnace cooling or air-cooled..

 

≤1.5

 

-----

 

Alloy Typical Expansion Coefficient of Invar 36-Bar

 

Alloy

Grades

The average linear expansion coefficient a,10-6/  

20-50 

20-100  

20-20 C

20-300  

20-400  

20-500  

 

Invar36

 

0.6

 

0.8

 

2.0

 

5.1

 

8.0

 

10.0

 

 

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