4J33|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.

4J33

Product properties:

Brand: KX-Alloy

Similar grades：-

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

Executive standard: YB/T5231

Application field: Industrial field

Product description and application

4J33 is a fixed expansion ceramic sealing alloy, which 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. It is mainly used for matching sealing with ceramics, and is an important sealing structural material in electric vacuum industry.

4J33Composition content

Fe：50.33%~53.03%

Ni：32.1%~33.6%

Co：14.0%~15.2%

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=8.27 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～ 500 ℃
4J33	It is heated to 900±20 ℃ in a protective atmosphere or vacuum, held for 1h, and cooled to less than 200 ℃ at a speed of no more than 5 ℃ / min	6.0～6.8	6.6～7.4

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℃
4J33	7.1	6.5	6.3	7.1	8.5

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Product form

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Application scenario

Petrochemical industry