Invar  Alloy

Invar Alloy

Model No.:

Invar 36 (Ni36);4J36

Introduction:

Available Shapes: Bar,Pipe,Wire,Strip,Plate,Fasteners,fittings

Product Detail

Product Tags

Invar 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℃ and 200℃.
2.Good toughness and plastic

Invar Alloy Trade Name: 4J32 Super Invar;Invar 36 (Ni36);4j36;

Invar Alloy Chemical composition:


Grade

                          Chemical Composition (%)

Alloy

C

Si

P

S

Cu

Se

Mn

Ni

Co

Fe







4J32

0.05

0.20

0.020

0.020

0.40~0.80


0.20~0.60

31.5~33.0

3.20~4.20

Balance

4J36

0.05

0.30

0.020

0.020



0.20~0.60

35.0~37.0


Balance

4J38

0.05

0.20

0.020

0.020

-

0.10~0.25

0.80

35.0~37.0

-

Balance

4J40

0.05

0.15

0.020

0.020

-

-

≤0.25

32.4~33.4

7.00~8.00

Balance

Invar Alloy Coefficient of Linear Expansion

Grade

Heat Treatment of the Samples

Mean Coefficient of Linear Expansion

Alloys

20~l00℃

20~300°C

4J32

To heat the semi-finished products samples to 840±10°C, hold for 1hour, and quench in the water. Machine the samples to finished samples. And heat at 315±10℃ for 1h, furnace or air cool.

≤1.0


4J36


≤1.5


4J38




4J40



≤2.0

Invar Alloy  Typical Expansion Coefficient

Grade

Mean Coefficient of Linear Expansion 

Alloys

20~50℃

20~100℃

20~200℃

20~300℃

20~400℃

20~500℃

4J32

0.7

0.8

1.4

4.3

7.2

9.3

4J36

0.6

0.8

2.0

5.1

8.0

10.0

4J40

1.4

1.3

1.2

1.7

4.5


Note: The data in the tables are just for reference.
Usage: Grade 4J32 and 4J36 are suitable for environmental temperature, make dimensional precision parts for instrumentation. 4J38 are used for easy to cut alloys. 4J40 are used for parts that require low expansion at high temperatures


  • Previous:
  • Next:
  • RELATED PRODUCTS

    WhatsApp Online Chat !