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Invar 4J36

4J36 alloy is also called INVAR alloy. The Curie point of the alloy is about 230°C. Below this temperature, the alloy is ferromagnetic and has a very low expansion coefficient. Above this temperature, the alloy is non-magnetic and the expansion coefficient increases.

Classification:

Precision alloy

Keyword: Invar 4J36

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1. chemical composition

Name	Invar 4J36
Chemical Composition Wt.%	Brand	Chemical composition (mass fraction)（%）
	4J36	C	P	S	Si	Mn	Ni	Fe
	4J36	≤0.05	≤0.020	≤0.020	≤0.30	0.2~0.6	35.0~37.0	margin

2. physical properties

Density	8.1g/cm³
Melting point	1430℃

Annealed state, mechanical properties of the alloy at room temperature:

Alloy state

Tensile strength

σb（Mpa）

Yield strength

σ0.2（Mpa）

Elongation A5 %

Hardness HB

4J36

490

240

≤200

3. varieties and specifications

Variety		Specifications
Wire	round wire	F0.15 ~ 13.00mm
Strip	cold rolling	0.15 to 4 × 200mm
Strip	hot rolling	4 to 22 × 200mm
Non-standard can support customization

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Invar 4J36