Huona (Shanghai) New Material Co., Ltd.
| Payment Terms | T/T |
| Supply Ability | 100,000 pieces / week |
| Delivery Time | a week |
| Packaging Details | negotiable |
| Thermal Expansion (30–300°C) | 5.3 × 10⁻⁶ /°C |
| Density | 8.2 g/cm³ |
| Electrical Resistivity | 0.48 μΩ·m |
| Tensile Strength | ≥ 450 MPa |
| Magnetic Properties | Soft magnetic, good permeability and stability |
| Surface | Bright, oxide-free |
| Brand Name | HUONA |
| Model Number | WIRE |
| Certification | ISO9001 SGS |
| 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 |
| Thermal Expansion (30–300°C) | 5.3 × 10⁻⁶ /°C | Density | 8.2 g/cm³ |
| Electrical Resistivity | 0.48 μΩ·m | Tensile Strength | ≥ 450 MPa |
| Magnetic Properties | Soft magnetic, good permeability and stability | Surface | Bright, oxide-free |
| Brand Name | HUONA | Model Number | WIRE |
| Certification | ISO9001 SGS | Place of Origin | CHINA |
| High Light | High Precision nickel alloy wire ，High Precision glass sealing alloy ，high Strength glass sealing alloy | ||
4J33 alloy wire is a precision low-expansion Fe-Ni-Co alloy material specifically designed for hermetic glass-to-metal sealing applications. With approximately 33% nickel and a small amount of cobalt, this alloy offers a thermal expansion coefficient closely matched to hard glass and ceramics. It is widely used in the manufacture of vacuum tubes, infrared sensors, electronic relays, and other high-reliability devices.
Nickel (Ni): ~33%
Cobalt (Co): ~3–5%
Iron (Fe): Balance
Others: Mn, Si, C (trace amounts)
Thermal Expansion (30–300°C): ~5.3 × 10⁻⁶ /°C
Density: ~8.2 g/cm³
Electrical Resistivity: ~0.48 μΩ·m
Tensile Strength: ≥ 450 MPa
Magnetic Properties: Soft magnetic, good permeability and stability
Diameter: 0.02 mm to 3.0 mm
Surface: Bright, oxide-free
Delivery form: Coils, spools, or cut length
Condition: Annealed or cold-drawn
Custom sizes and packaging available
Excellent match with hard glass for vacuum-tight sealing
Stable thermal expansion for precision components
Good corrosion resistance and weldability
Clean surface finish, vacuum-compatible
Reliable performance in aerospace and electronic applications
Glass-to-metal hermetic seals
Vacuum tubes and infrared sensors
Relay housings and electronic packaging
Optical device enclosures
Aerospace-grade connectors and leads
Standard plastic spool, vacuum-sealed or custom packaging
Delivery via air, sea, or express
Lead time: 7–15 working days depending on order size
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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