4J34|Kaixin Alloy Materials Co., Ltd.-specializes in high-temperature alloys-corrosion-resistant alloys-expansion alloys-pure nickel alloys and other strips-wires-rods

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Danyang Kaixin Alloy Material Co., Ltd.

4J34

Product properties:

Brand: KX-Alloy

Similar grades：31HК(Ni31Co20)

Certification certificate：ISO9001:2015

Place of Origin: Danyang, Jiangsu, China

Product Description

Alloy Category：Expansion alloy

Substrate shape: wire/strip/rod/pipe/plate

Alloy seires:perminvar

Implementation standards：YB/T5231

Applications: Industry, aerospace, telecommunications

Product description and application

4J34 is a ceramic sealing alloy developed according to the characteristics of China's ceramics. In the temperature range of -60℃ ~ 600℃, the linear expansion coefficient of the alloy is similar to that of 95%Al2O3 ceramics. Widely used in high-precision instruments, optical devices, antennas, satellites, aerospace and other fields. In addition, it can also be used to manufacture magnetic components, capacitors and so on.

4J34Composition content

Fe：49.13%~51.13%

Ni：28.5%~29.5%

Co：19.5%~20.5%

Mn≤0.5%

Si≤0.3%

C≤0.03%

P≤0.02%

S≤0.02%

Vacuum induction furnace

Electroslag remelting

Product physical properties

Density

ρ=8.29 g/cm³

Melting temperature

1450℃

Mechanical properties

The tensile strength of the wire:

Status code	Status	Tensile strength/MPa
R	Soft state	≤585
I	Hard state	≥860

Tensile strength of strip:

Status code	Status	Tensile strength/MPa

R	Soft state	≤570
I	Hard state	≤700

Product average linear expansion coefficient:

Alloy designation	Sample heat treatment regime	Average linear expansion coefficient α/(10^-6/ K）

		20～ 400 ℃	20～ 600 ℃
4J34	It is heated to 900±20 ℃ in a hydrogen atmosphere, held for 1h, and cooled to 200 ℃ or less at a speed of no more than 5 ℃ / min	6.3～7.1	7.8～8.5

Product typical mean linear expansion:

Alloy designation	Average linear expansion coefficient in different temperature ranges α/(10^-6/ K）

	20～ 200 ℃	20～ 300 ℃	20~400 ℃	20～500℃	20～600℃
4J34	7.5	6.9	6.6	6.9	8.3

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Application scenario

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