Invar  Wire

Invar Wire

Model No.:

Invar 36 (Ni36);4J36

Introduction:

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

Product Detail

Product Tags

Invar Wire 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 Wire Chemical composition:

Grade                          Chemical Composition (%)
AlloyCSiPSCuSeMnNiCoFe






4J320.050.200.0200.0200.40~0.80
0.20~0.6031.5~33.03.20~4.20Balance
4J360.050.300.0200.020

0.20~0.6035.0~37.0
Balance
4J380.050.200.0200.020-0.10~0.250.8035.0~37.0-Balance
4J400.050.150.0200.020--≤0.2532.4~33.47.00~8.00Balance

Invar Wire Coefficient of Linear Expansion

GradeHeat Treatment of the SamplesMean Coefficient of Linear Expansion
Alloys
20~l00℃20~300°C
4J32To 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 Wire Typical Expansion Coefficient

GradeMean Coefficient of Linear Expansion 
Alloys20~50℃20~100℃20~200℃20~300℃20~400℃20~500℃
4J320.70.81.44.37.29.3
4J360.60.82.05.18.010.0
4J401.41.31.21.74.5

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

 

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