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4J32 Rod Controlled Expansion Alloy Bar Fe Ni Alloy for Glass and Ceramic Sealing
4J32 Rod Controlled Expansion Alloy Bar Fe Ni Alloy for Glass and Ceramic Sealing
Specifications
Brand Name :
HUONA
Model Number :
4J32
Certification :
ISO 9001, SGS, RoHS
Place of Origin :
china
MOQ :
1kg
Price :
negotiation
Payment Terms :
T/T
Supply Ability :
10000kg/week
Delivery Time :
a week
Packaging Details :
Wooden case, steel strip bundling
Diameter :
3 mm – 200 mm
Length :
≤ 6000 mm
Tolerance :
As per ASTM / GB standard
Surface :
Bright / Polished / Black
Thermal Expansion (20–400°C) :
~4.5 ×10⁻⁶/°C
Tensile Strength :
≥ 450 MPa
Working Temp :
-196°C to 450°C
Description

Product Description

4J32 alloy rod is a Fe-Ni controlled expansion alloy, specially designed for glass-to-metal and ceramic-to-metal sealing applications. Its thermal expansion coefficient closely matches that of certain hard glasses and ceramics, ensuring excellent hermeticity and reliability.

This alloy offers good machinability, stable thermal expansion performance, and reliable mechanical properties, making it widely used in semiconductor packaging, vacuum devices, relays, sensors, aerospace instruments, and electronic components.

Key Features

  • Fe-Ni controlled expansion alloy

  • Excellent thermal expansion match with ceramics & hard glass

  • Superior hermetic sealing capability

  • Stable mechanical strength across working temperature range

  • Good machinability and polishability

  • Supplied in rods, wires, sheets, customized forms

Typical Applications

  • Glass-to-metal sealing

  • Ceramic-to-metal sealing

  • Semiconductor packaging bases

  • Relays, sensors, electronic tubes

  • Aerospace and defense components

  • Vacuum electronic devices

Chemical Composition (%)

Element Content
Fe Balance
Ni ~32%
Mn, Si, C, etc. Minor

Physical and Performance Properties

Property Typical Value
Density ~8.1 g/cm³
Thermal Expansion (20–400°C) ~4.5 ×10⁻⁶/°C
Tensile Strength ≥ 450 MPa
Hardness ~HB 130–160
Working Temp -196°C to 450°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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4J32 Rod Controlled Expansion Alloy Bar Fe Ni Alloy for Glass and Ceramic Sealing

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Product Detail
Brand Name :
HUONA
Model Number :
4J32
Certification :
ISO 9001, SGS, RoHS
Place of Origin :
china
MOQ :
1kg
Price :
negotiation
Contact Supplier
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4J32 Rod Controlled Expansion Alloy Bar Fe Ni Alloy for Glass and Ceramic Sealing

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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