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4J46 Rod Controlled Expansion Alloy Bar Fe Ni Alloy for Glass and Ceramic Sealing
4J46 Rod Controlled Expansion Alloy Bar Fe Ni Alloy for Glass and Ceramic Sealing
Specifications
Brand Name :
HUONA
Model Number :
4J46
Certification :
ISO 9001, SGS, RoHS
Place of Origin :
China
MOQ :
5KG
Price :
negotiation
Payment Terms :
T/T
Supply Ability :
10000kg/week
Delivery Time :
1 week
Packaging Details :
Wooden case, steel strip bundling
Density :
~8.2 g/cm³
Thermal Expansion (20–400°C) :
~5.0 ×10⁻⁶/°C
Tensile Strength :
≥ 450 MPa
Hardness :
~HB 130–160
Working Temp :
-196°C to 450°C
Standard :
GB/T, ASTM, IEC
Tolerance :
As per ASTM / GB standard
Packaging :
Wooden case, steel strip bundling
Description

Product Description

4J46 alloy rod is a Fe-Ni controlled expansion alloy with about 46% nickel, designed for glass-to-metal and ceramic-to-metal sealing applications. Its thermal expansion coefficient matches that of hard glass and ceramics, ensuring excellent hermetic sealing and reliability.

This alloy features stable expansion characteristics, good machinability, and high sealing performance, making it widely applied in semiconductor packaging, vacuum tubes, relays, sensors, aerospace devices, and precision electronic components.

4J46 Rod Controlled Expansion Alloy Bar Fe Ni Alloy for Glass and Ceramic Sealing

Key Features

  • Fe-Ni controlled expansion alloy (Ni ~46%)

  • Excellent sealing with ceramics and hard glass

  • Reliable thermal expansion stability

  • 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, vacuum tubes

  • Aerospace and defense electronic devices

  • Hermetic sealing in precision instruments

Chemical Composition (%)

Element Content
Fe Balance
Ni ~46%
Mn, Si, C, etc. Minor

Physical and Performance Properties

Property Typical Value
Density ~8.2 g/cm³
Thermal Expansion (20–400°C) ~5.0 ×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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4J46 Rod Controlled Expansion Alloy Bar Fe Ni Alloy for Glass and Ceramic Sealing

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Product Detail
Brand Name :
HUONA
Model Number :
4J46
Certification :
ISO 9001, SGS, RoHS
Place of Origin :
China
MOQ :
5KG
Price :
negotiation
Contact Supplier
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4J46 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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