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| Categories | Low Expansion Alloy |
|---|---|
| Brand Name: | HUONA |
| Model Number: | 4J36 |
| Certification: | ISO 9001, SGS, RoHS |
| Place of Origin: | CHINA |
| MOQ: | 5KG |
| Price: | Negotiation |
| Payment Terms: | T/T |
| Supply Ability: | 10000kg /week |
| Delivery Time: | a week |
| Packaging Details: | Wooden case, steel strip bundling |
| Diameter: | 3 mm – 200 mm |
| Length: | ≤ 6000 mm |
| Tolerance: | As per ASTM / GB standard |
| Surface: | Bright / Polished / Black |
| Property Typical Value Density ~8.1 g/cm³ Thermal Expansion (20–100°C): | ~1.2 ×10⁻⁶/°C |
| Tensile Strength: | ≥ 450 MPa |
| Hardness: | ~HB 120–150 |
| Company Info. |
| Huona (Shanghai) New Material Co., Ltd. |
| Verified Supplier |
| View Contact Details |
| Product List |
4J36 alloy rod, also known as Invar 36, is a low expansion Fe-Ni alloy containing about 36% nickel. It is widely recognized for its extremely low coefficient of thermal expansion (CTE) around room temperature.
This property makes 4J36 ideal for applications requiring dimensional stability under temperature fluctuations, such as precision instruments, measuring devices, aerospace, and cryogenic engineering.
Fe-Ni controlled expansion alloy (Ni ~36%)
Very low thermal expansion coefficient
Excellent dimensional stability
Good machinability and weldability
Available in rods, wires, sheets, and custom forms
Precision measuring instruments
Optical and laser system components
Aerospace and satellite structures
Electronic packaging requiring dimensional stability
Cryogenic engineering devices
Standards of length, balance springs, precision pendulums
| Element | Content |
|---|---|
| Fe | Balance |
| Ni | ~36% |
| C, Mn, Si, etc. | Minor |
| Property | Typical Value |
|---|---|
| Density | ~8.1 g/cm³ |
| Thermal Expansion (20–100°C) | ~1.2 ×10⁻⁶/°C |
| Tensile Strength | ≥ 450 MPa |
| Hardness | ~HB 120–150 |
| Working Temp | -200°C to 200°C |
| Standard | GB/T, ASTM, IEC |
| 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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