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4J50 Rod Controlled Expansion Alloy Bar Fe Ni Precision Alloy Material
4J50 Rod Controlled Expansion Alloy Bar Fe Ni Precision Alloy Material
Specifications
Brand Name :
HUONA
Model Number :
4J50
Certification :
ISO 9001, SGS, RoHS
Place of Origin :
China
MOQ :
5KG
Price :
NEGOTIATION
Payment Terms :
T/T
Supply Ability :
10000KG /WEEK
Delivery Time :
A WEEK
Packaging Details :
Wooden case, steel strip bundling
Density :
8.2 g/cm³
Thermal Expansion (20–300°C) :
6.0 ×10⁻⁶/°C
Tensile Strength :
450 MPa
Hardness :
HB 130–160
Working Temp :
60°C to 400°C
Surface :
Bright / Polished / Black
Tolerance :
As per ASTM / GB standard
Diameter :
3 mm – 200 mm
Description

Product Description

4J50 alloy rod is a Fe-Ni controlled expansion alloy containing about 50% nickel.
It is widely used where a stable and low thermal expansion coefficient is required, especially for matching sealing with ceramics and certain glasses.

The alloy provides good machinability, weldability, and reliable sealing performance, making it suitable for electronic packaging, vacuum devices, and aerospace components.

Key Features

  • Fe-Ni controlled expansion alloy

  • Stable and low thermal expansion coefficient

  • Excellent glass/ceramic sealing performance

  • Good processability and welding properties

  • Available in rods, wires, and customized forms

Typical Applications

  • Glass-to-metal and ceramic-to-metal seals

  • Electronic packaging housings

  • Semiconductor device supports

  • Vacuum devices and relays

  • Aerospace instruments and precision devices

Chemical Composition (%)

Element Content
Fe Balance
Ni ~50%
Mn, Si, C, etc. Minor

Physical and Performance Properties

Property Typical Value
Density ~8.2 g/cm³
Thermal Expansion (20–300°C) ~6.0 ×10⁻⁶/°C
Tensile Strength ≥ 450 MPa
Hardness HB 130–160
Working Temp -60°C to 400°C
Standard GB/T, ASTM, IEC

Available Specifications

Item Range
Diameter 3 mm – 200 mm
Length ≤ 6000 mm
Tolerance As per ASTM / GB standard
Surface Bright / Polished / Black
Packaging Wooden case, steel strip bundling
Certification ISO 9001, SGS, RoHS
Origin China (OEM/ODM service available)


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4J50 Rod Controlled Expansion Alloy Bar Fe Ni Precision Alloy Material

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Product Detail
Brand Name :
HUONA
Model Number :
4J50
Certification :
ISO 9001, SGS, RoHS
Place of Origin :
China
MOQ :
5KG
Price :
NEGOTIATION
Contact Supplier
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4J50 Rod Controlled Expansion Alloy Bar Fe Ni Precision Alloy Material

Huona (Shanghai) New Material Co., Ltd.

Verified Supplier
1 Years
shanghai, shanghai
Since 2008
Business Type :
Manufacturer, Exporter
Main Products :
Low Expansion Alloy, Soft Magnetic Alloy, Elastic Alloy
Total Annual :
8000000-100000000
Employee Number :
100~120
Certification Level :
Verified Supplier
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