Huona (Shanghai) New Material Co., Ltd.
| Payment Terms | T/T |
| Supply Ability | 100,000 pieces / week |
| Delivery Time | a week |
| Packaging Details | negotiable |
| CTE (Coefficient of Thermal Expansion, 20–300°C) | 5.5–6.0 × 10⁻⁶ /°C |
| Density | 8.1 g/cm³ |
| Electrical Resistivity | 0.75 μΩ·m |
| Tensile Strength | ≥ 430 MPa |
| Magnetic Properties | Soft magnetic, low coercivity |
| Diameter | 0.02 mm – 3.0 mm |
| Condition | Annealed or cold drawn |
| Customization | Available on request |
| Brand Name | HUONA |
| Model Number | WIRE |
| Certification | ISO9001 |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | T/T | Supply Ability | 100,000 pieces / week |
| Delivery Time | a week | Packaging Details | negotiable |
| CTE (Coefficient of Thermal Expansion, 20–300°C) | 5.5–6.0 × 10⁻⁶ /°C | Density | 8.1 g/cm³ |
| Electrical Resistivity | 0.75 μΩ·m | Tensile Strength | ≥ 430 MPa |
| Magnetic Properties | Soft magnetic, low coercivity | Diameter | 0.02 mm – 3.0 mm |
| Condition | Annealed or cold drawn | Customization | Available on request |
| Brand Name | HUONA | Model Number | WIRE |
| Certification | ISO9001 | Place of Origin | CHINA |
| High Light | 4j42 low expansion alloy ，4j42 cobalt chromium alloy | ||
4J42 wire is a precision-controlled expansion alloy composed of iron and approximately 42% nickel. It is engineered to closely match the thermal expansion of borosilicate glass and other packaging materials, making it an ideal choice for hermetic sealing, electronic packaging, and aerospace applications.
Nickel (Ni): ~42%
Iron (Fe): Balance
Minor elements: Mn, Si, C (trace amounts)
CTE (Coefficient of Thermal Expansion, 20–300°C): ~5.5–6.0 × 10⁻⁶ /°C
Density: ~8.1 g/cm³
Electrical Resistivity: ~0.75 μΩ·m
Tensile Strength: ≥ 430 MPa
Magnetic Properties: Soft magnetic, low coercivity
Diameter: 0.02 mm – 3.0 mm
Surface: Bright, oxide-free
Form: Spool, coil, cut-to-length
Condition: Annealed or cold drawn
Customization: Available on request
Matched thermal expansion for glass and ceramics
Stable mechanical and magnetic properties
Excellent vacuum compatibility
Ideal for electronic sealing, relays, and sensor leads
Low expansion with good ductility and weldability
Glass-to-metal hermetic seals
Semiconductor lead frames
Electronic relay headers
Infrared and vacuum sensors
Communication devices and packaging
Aerospace connectors and enclosures
Vacuum packaging or plastic spools
Anti-corrosion treatment
Air/sea/express delivery available
Delivery time: 7–15 business days
Company Details
Business Type:
Manufacturer,Exporter
Year Established:
2008
Total Annual:
8000000-100000000
Employee Number:
100~120
Ecer Certification：
Verified Supplier
Huona (Shanghai) New Material Co., Ltd. Was established in 2008, currently have three divisions: Magnesium Division, Thermal Spray Division and Functional Material Division.Magnesium Division produces magnesium metal products. Various models of high-quality magnesium alloy plate, magnesium rods, hig... Huona (Shanghai) New Material Co., Ltd. Was established in 2008, currently have three divisions: Magnesium Division, Thermal Spray Division and Functional Material Division.Magnesium Division produces magnesium metal products. Various models of high-quality magnesium alloy plate, magnesium rods, hig...
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