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High Precision 4J32 Alloy Wire Low Expansion Fe-Ni Wire For Vacuum And Sensor Applications
High Precision 4J32 Alloy Wire Low Expansion Fe-Ni Wire For Vacuum And Sensor Applications
Specifications
Brand Name :
HUONA
Model Number :
wire
Certification :
ISO9001 SGS
Place of Origin :
CHINA
MOQ :
1KG
Price :
negotiable
Payment Terms :
T/T
Supply Ability :
100,000 pieces / week
Delivery Time :
a week
Packaging Details :
negotiable
Diameter :
0.02 mm – 3.0 mm
Length :
in coils, spools, or cut-to-length as required
Thermal Expansion (30–300°C) :
~5.5 × 10⁻⁶ /°C
Density :
8.2 g/cm³
Tensile Strength: :
≥ 450 MPa
Resistivity :
0.45 μΩ·m
Description

Product Overview

4J32 alloy wire is a precision nickel-iron alloy with a low and controlled coefficient of thermal expansion, specifically designed for glass-to-metal sealing applications. With approximately 32% nickel, this alloy provides excellent compatibility with hard glass and borosilicate glass, ensuring reliable hermetic sealing in electronic vacuum devices, sensors, and military-grade packages.

Material Composition

  • Nickel (Ni): ~32%

  • Iron (Fe): Balance

  • Minor elements: Manganese, Silicon, Carbon, etc.

Thermal Expansion (30–300°C): ~5.5 × 10⁻⁶ /°C
Density: ~8.2 g/cm³
Tensile Strength: ≥ 450 MPa
Resistivity: ~0.45 μΩ·m
Magnetic Properties: Soft magnetic behavior with stable performance

Available Sizes & Supply

  • Diameter: 0.02 mm – 3.0 mm

  • Length: in coils, spools, or cut-to-length as required

  • Condition: Annealed or cold drawn

  • Surface: Bright, oxide-free, smooth finish

  • Packaging: Vacuum-sealed bags, anti-rust foil, plastic spools

Key Features

  • Excellent match with glass for hermetic sealing

  • Stable low thermal expansion performance

  • High purity and clean surface for vacuum compatibility

  • Easy to weld, shape, and seal under various processes

  • Customizable size and packaging options for different applications

Applications

  • Glass-to-metal sealed relays and vacuum tubes

  • Sealed electronic packages for aerospace and defense

  • Sensor components and IR detector housings

  • Semiconductor and optoelectronic packaging

  • Medical devices and high-reliability modules


High Precision 4J32 Alloy Wire Low Expansion Fe-Ni Wire For Vacuum And Sensor Applications
High Precision 4J32 Alloy Wire Low Expansion Fe-Ni Wire For Vacuum And Sensor Applications
High Precision 4J32 Alloy Wire Low Expansion Fe-Ni Wire For Vacuum And Sensor Applications
High Precision 4J32 Alloy Wire Low Expansion Fe-Ni Wire For Vacuum And Sensor Applications

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High Precision 4J32 Alloy Wire Low Expansion Fe-Ni Wire For Vacuum And Sensor Applications

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Product Detail
Brand Name :
HUONA
Model Number :
wire
Certification :
ISO9001 SGS
Place of Origin :
CHINA
MOQ :
1KG
Price :
negotiable
Contact Supplier
High Precision 4J32 Alloy Wire Low Expansion Fe-Ni Wire For Vacuum And Sensor Applications

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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