4J36 Invar Alloy Strip Low Expansion ASTM F1684 for Glass Sealing
Price:
Bargain
MOQ:
1KG
Delivery Time:
WEEK
Brand:
HUONA
Product Description
4J36 Invar Alloy Strip Low Expansion Iron-Nickel Strip ASTM F1684 for Glass Sealing and Precision Components
Product Attributes
| Attribute | Value |
|---|---|
| Tensile Strength | ≥ 450 MPa |
| Yield Strength (0.2%) | ≥ 270 MPa |
| Elongation | ≥ 30% |
| Hardness | ≤ 160 HV |
| Density | ~8.1 g/cm³ |
| Thermal Expansion (20–100°C) | ~1.2 × 10⁻⁶ /°C |
| Max Service Temp | ~300°C (572°F) |
| Country of Origin | China (OEM and custom logo available) |
Product Description
4J36 strip, also known as Invar 36, is a low-expansion iron-nickel alloy composed of approximately 36% nickel and 64% iron. It exhibits an extremely low coefficient of thermal expansion in the temperature range of −60°C to 250°C, making it highly suitable for precision instruments and sealing applications.
This strip alloy conforms to ASTM F1684 and is widely used in manufacturing electronic supports, glass-to-metal seals, thermostat components, aerospace instruments, and precision optical systems. Its dimensional stability and excellent mechanical properties under thermal stress make it a preferred material for applications requiring minimal deformation under temperature changes.
Key Features
- Exceptionally low thermal expansion from cryogenic to ~250°C
- Excellent dimensional stability and formability
- Good machinability and weldability
- High structural integrity in vacuum and sealed environments
- Compatible with glass and ceramic sealing processes
- Available in precision thicknesses with bright surface finish
Typical Applications
- Glass-to-metal sealed enclosures and headers
- Shadow masks and structural parts for CRTs and sensors
- Aerospace and aviation instrumentation
- Bimetal thermostatic components
- Electronic scale frames and supports
- Precision molds and measurement tools
- Laser/optical mounting brackets
Chemical Composition (%)
| Element | Typical Content (%) |
|---|---|
| Nickel (Ni) | 35.0 - 37.0 |
| Carbon (C) | ≤ 0.05 |
| Manganese (Mn) | 0.30 - 0.60 |
| Silicon (Si) | ≤ 0.30 |
| Phosphorus (P) | ≤ 0.020 |
| Sulfur (S) | ≤ 0.020 |
| Iron (Fe) | Balance |
Mechanical Properties (Annealed Condition)
| Property | Typical Value |
|---|---|
| Tensile Strength | ≥ 450 MPa |
| Yield Strength (0.2%) | ≥ 270 MPa |
| Elongation | ≥ 30% |
| Hardness | ≤ 160 HV |
| Density | ~8.1 g/cm³ |
| Thermal Expansion (20-100°C) | ~1.2 × 10⁻⁶ /°C |
| Max Service Temp | ~300°C (572°F) |
Available Specifications
| Item | Details |
|---|---|
| Thickness Range | 0.05 mm - 2.0 mm |
| Width Range | 3 mm - 300 mm |
| Form | Strip in coil, sheet cut-to-length |
| Surface Finish | Bright, cold-rolled, deburred |
| Standards | ASTM F1684, GB/T 13240, DIN 17745 |
| Condition | Annealed, stress-relieved |
| Packaging | Plastic wrap + carton or wooden box |
| Certification | ISO 9001, ROHS, EN 10204 3.1 |
| Country of Origin | China (OEM and custom logo available) |
Packaging & Shipping
- Packaging: Plastic spools, vacuum bags, anti-rust wrapping, and customized labels upon request
- Shipping Methods: Air freight, sea freight, express delivery
- Lead Time: 7-15 working days based on order quantity
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Company
Huona (Shanghai) New Material Co., Ltd.
Location
1900 Mudanjiang Road, Baoshan District, 201999, Shanghai, China
Contact Person
Roy