4J52|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.

4J52

Product properties:

Brand: KX-Alloy

Similar grades：Alloy 52,Glass sealing 52,Pernifer 50,52H,N14052，DIN EN2.4478

Certification certificate：ISO9001:2015

Place of Origin: Danyang, Jiangsu, China

Product Description

Alloy Category：Expansion alloy

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

Alloy series: nickalloy

Implementation standards：ASTM F30

Applications: Aerospace, industry, energy, automotive

Product description and application

4j52 Fe-Ni constant expansion alloy is a series of constant expansion alloys which can be matched with soft glass and ceramic with different expansion coefficient in a given temperature range by adjusting the nickel content, and its expansion coefficient and Curie point increase with the increase of nickel content. These alloys are widely used as sealing structural materials in the electric vacuum industry.

4J52Composition content

Ni≤50.5%

Fe≤48.15%

Mn≤0.6%

Si≤0.3%

C≤0.05%

P≤0.025%

S≤0.025%

Vacuum induction furnace

Electroslag remelting

Product physical properties

Density

ρ=8.3 g/cm³

Fusing point

1430℃

Mechanical properties

Tensile strength of 4j52 wire:

Status code	Status	Tensile strength/MPa
R	Soft state	<590
I	Hard state	>820

4j52 strip tensile strength:

Status code	Status	Tensile strength/MPa

R	Soft state	<570
I	Hard state	>700

Average linear expansion coefficient of 4j52 alloy:

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

		30～ 450 ℃	30～ 550 ℃
Alloy 52	It is heated to 900℃ in a hydrogen atmosphere, held for 1h, and cooled to 200 ℃ or less at a speed of no more than 5 ℃/ min	9.7～ 10.2	10.0-10.5

Average linear expansion coefficient of 4j52 alloy:

Alloy designation	Average linear expansion coefficient α/(10^-6/ K）
	Average linear expansion coefficient α/(10^-6/ K）
	20～ 300 ℃	20～ 400 ℃	20~500 ℃	20～600℃	20～700℃	20～800℃	20～900℃
4J52	10.1	9.9	9.9	10.8	11.7	12.5	13.3

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