Expansion alloy 4J32 Super-Invar alloy Low expansion iron-nickel-cobalt alloy

Bars, plates, strips, wires, pipes

Surface treatment:
Hot rolled ,Hot forging, Cold rolled, Cold pull ,Cold drawn
Metallic color
Expansion alloy 4J32 Description

Expansion alloy 4J32 alloy, also known as Super-Invar (Super-Invar) alloy, is a low-expansion iron-nickel-cobalt alloy. It has a low expansion coefficient in the range of 20-100°C.

Expansion alloy 4J32 specification
Bar 5.0Mm to 8.0Mm cold drawn; 8.0Mm to 30.0Mm hot rolled; 30.0Mm to 180.0Mm hot forged
Plate 3.5Mm to 30.0Mm hot rolling; 30.0Mm to 40.0Mm hot forging
Strip 0.2Mm to 3.5Mm cold rolled
Flat wire 0.5Mm to 5.0Mm hot rolled
Round wire 0.1Mm to 5.0Mm cold drawn
Capillary tube outer diameter 8.0Mm to 1.0Mm, inner diameter 0.1Mm to 8.0Mm cold drawn
Tube outer diameter 120Mm to 8.0Mm, inner diameter 8.0Mm to 129Mm cold drawn

Chemical composition of expanded alloy 4J32

Chemical composition data sheet of expansion alloy 4J32

Expansion alloy 4J32 average linear expansion coefficient

Table of mean linear expansion coefficient data for expansion alloy 4J32

Expansion alloy 4J32 linear thermal expansion

Linear thermal expansion data sheet for expansion alloy 4J32

Application of expansion alloy 4J32
Suitable for various instruments, instrument parts, thermal bimetal passive layers and resonant cavities that require dimensional stability


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