Precision Nickel Iron Steel Invar 36 Alloy Bar Rod Shape

Brand Name:BLM
Certification:ISO
Model Number:BLM-S
Minimum Order Quantity:100kgs
Delivery Time:25days
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Precision Alloy Nickel Iron Steel Invar 36 Nickel Bar Rod


1 . Description

36 alloy is a special ultra-low coefficient of heat expansion of low-iron-nickel alloy. One of carbon and manganese element of control is very important. Cold deformation can reduce the coefficient of thermal expansion, in particular within the framework of the heat treatment temperature coefficient of thermal expansion will enable stabilization. Has the following characteristics:

1.Has very low coefficient of heat expansion between the temperature of -250°C and 200°C.

2.Good toughness and plastic

Metallurgical structure

Invar 36 is the face centered cubic lattice structure


2 . 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



3 . Typical Physical properties

Density (g/cm3)

8.1

Electrical resistivity at 20℃(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


4 . Heat treatment process

Stress relief annealing

Heat to 530~550℃, keep for 1~2 h. Cool in the furnace

annealing

Heating to 830~880℃ ,keep holding for 30 min. Furnace cooling

Stabilization

(1) Heat to 830 ℃ in a protective atmosphere, hold for 20min. ~ 1h, quench (2)Temper

Precautions

(1) The alloy cannot be hardened by heat treatment

(2)Surface treatment can be sandblasted, polished and pickled


5 . Pictures

China Precision Nickel Iron Steel Invar 36 Alloy Bar Rod Shape supplier

Precision Nickel Iron Steel Invar 36 Alloy Bar Rod Shape

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