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Invar Tube Cold Drawing 1.5mmx0.5mm Invar Capillary Tube-4J36 Tube

Invar Tube Cold Drawing 1.5mmx0.5mm Invar Capillary Tube-4J36 Tube

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Invar tube Cold Drawing 1.5mmx0.5mm Invar Capillary Tube-4J36 Tube (Common Name: Invar, FeNi36, Invar Standard, Vacodil36) OhmAlloy-4J36 (Invar), also known generically as FeNi36 (64FeNi in the US), is a nickel–iron alloy notable for its uniquely low coefficient of thermal expansion (CTE or α)....

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Invar tube Cold Drawing 1.5mmx0.5mm Invar Capillary Tube-4J36 Tube


(Common Name: Invar, FeNi36, Invar Standard, Vacodil36)

OhmAlloy-4J36 (Invar), also known generically as FeNi36 (64FeNi in the US), is a nickel–iron alloy notable for its uniquely low coefficient of thermal expansion (CTE or α).

 

The name Invar comes from the word invariable, referring to its relative lack of expansion or contraction with temperature changes.

UAlloy-4J36 (Invar) is used where high dimensional stability is required, such as precision instruments, clocks, seismic creep gauges, television shadow-mask frames, valves in motors, and antimagnetic watches. In land surveying, when first-order (high-precision) elevation leveling is to be performed, the Level staff (leveling rod) used is made of Invar, instead of wood, fiberglass, or other metals. Invar struts were used in some pistons to limit their thermal expansion inside their cylinders.


 Normal composition%

Ni

35~37.0

Fe

Bal.

Co

-

Si

≤0.3

Mo

-

Cu

-

Cr

-

Mn

0.2~0.6

C

≤0.05

P

≤0.02

S

≤0.02




 Typical Physical properties

Density (g/cm3)

8.1

Electrical resistivity at 20 C(Ωmm2/m)

0.78

Temperature factor of resistivity(20℃~200℃)X10-6/℃ 

3.7~3.9

Thermal conductivity, λ/ W/(m*℃)

11

Curie point   Tc/ ℃

230

Elastic Modulus,  E/ Gpa

144

 Typical Mechanical properties

Tensile Strength

Elongation

Mpa

%

641

14

689

9

731

8

 

Temperature factor of resistivity

Temperature range, ℃

20~50

20~100

20~200

20~300

20~400

aR/ 103 *℃

1.8

1.7

1.4

1.2

1.0



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