MachineU > China Products > Minerals & Metallurgy
4J42 Rod Controlled Expansion Alloy Bar Fe Ni Precision Alloy Material
4J42 Rod Controlled Expansion Alloy Bar Fe Ni Precision Alloy Material
Specifications
Brand Name :
HUONA
Model Number :
4J42
Certification :
ISO 9001, SGS, RoHS
Place of Origin :
China (OEM/ODM service available)
MOQ :
5KG
Price :
NEGOTIATION
Payment Terms :
T/T
Supply Ability :
1000KG/WEEK
Delivery Time :
A WEEK
Packaging Details :
Wooden case, steel strip bundling
Density :
8.1 g/cm³
Thermal Expansion (20–300°C) :
5.3 ×10⁻⁶/°C
Tensile Strength :
450 MPa
Hardness :
HB 130–160
Working Temp :
60°C to 400°C
Standard :
GB/T, ASTM, IEC
Diameter :
3 mm – 200 mm
Surface :
Bright / Polished / Black
Description

Product Description

4J42 alloy rod is a Fe-Ni controlled expansion alloy containing about 42% nickel. It features a linear thermal expansion coefficient closely matching that of hard glass and ceramics, making it ideal for glass-to-metal and ceramic-to-metal sealing applications.

This alloy offers stable expansion performance, good processing properties, and excellent sealing reliability, widely used in electronic packaging, vacuum devices, and aerospace components.

Key Features

  • Fe-Ni controlled expansion alloy

  • Stable thermal expansion coefficient

  • Excellent sealing performance with glass/ceramic

  • Good machinability and weldability

  • Supplied in rods, wires, strips, and customized forms

Typical Applications

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

  • Electronic packaging housings

  • Vacuum tubes, relays, and electronic devices

  • Semiconductor device supports

  • Aerospace and precision instruments

Chemical Composition (%)

Element Content
Fe Balance
Ni ~42%
Mn, Si, C, etc. Minor

Physical and Performance Properties

Property Typical Value
Density ~8.1 g/cm³
Thermal Expansion (20–300°C) ~5.3 ×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)


Send your message to this supplier
Send Now

4J42 Rod Controlled Expansion Alloy Bar Fe Ni Precision Alloy Material

Ask Latest Price
Watch Video
Product Detail
Brand Name :
HUONA
Model Number :
4J42
Certification :
ISO 9001, SGS, RoHS
Place of Origin :
China (OEM/ODM service available)
MOQ :
5KG
Price :
NEGOTIATION
Contact Supplier
video
4J42 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
Discover similar products
View More

Find Similar Products By Category:

Supplier Homepage Products Low Expansion Alloy
MachineU China Products Minerals & Metallurgy
Contact Supplier
Submit Requirement