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4J50 Rod Controlled Expansion Alloy Bar Fe Ni Precision Alloy Material
| Place of Origin | China |
|---|---|
| Brand Name | HUONA |
| Certification | ISO 9001, SGS, RoHS |
| Model Number | 4J50 |
| Minimum Order Quantity | 5KG |
| Price | NEGOTIATION |
| Packaging Details | Wooden case, steel strip bundling |
| Delivery Time | A WEEK |
| Payment Terms | T/T |
| Supply Ability | 10000KG /WEEK |
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xProduct Details
| Density | 8.2 G/cm³ | Thermal Expansion (20–300°C) | 6.0 ×10⁻⁶/°C |
|---|---|---|---|
| Tensile Strength | 450 MPa | Hardness | HB 130–160 |
| Working Temp | 60°C To 400°C | Surface | Bright / Polished / Black |
| Tolerance | As Per ASTM / GB Standard | Diameter | 3 Mm – 200 Mm |
| Highlight | 4J50 Rod Controlled Expansion Alloy Bar,Precision Alloy Bar |
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Product Description
Product Description
4J50 alloy rod is a Fe-Ni controlled expansion alloy containing about 50% nickel.
It is widely used where a stable and low thermal expansion coefficient is required, especially for matching sealing with ceramics and certain glasses.
The alloy provides good machinability, weldability, and reliable sealing performance, making it suitable for electronic packaging, vacuum devices, and aerospace components.
Key Features
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Fe-Ni controlled expansion alloy
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Stable and low thermal expansion coefficient
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Excellent glass/ceramic sealing performance
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Good processability and welding properties
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Available in rods, wires, and customized forms
Typical Applications
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Glass-to-metal and ceramic-to-metal seals
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Electronic packaging housings
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Semiconductor device supports
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Vacuum devices and relays
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Aerospace instruments and precision devices
Chemical Composition (%)
| Element | Content |
|---|---|
| Fe | Balance |
| Ni | ~50% |
| Mn, Si, C, etc. | Minor |
Physical and Performance Properties
| Property | Typical Value |
|---|---|
| Density | ~8.2 g/cm³ |
| Thermal Expansion (20–300°C) | ~6.0 ×10⁻⁶/°C |
| Tensile Strength | ≥ 450 MPa |
| Hardness | HB 130–160 |
| Working Temp | -60°C to 400°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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