Elements | 4J29 | 4J36 | |
Carbon (C) | Not greater than | 0.03 | 0.05 |
Sulfur (S) | 0.02 | 0.02 | |
Phosphorus (P) | 0.02 | 0.02 | |
Manganese (Mn) | ≤0.50 | 0.20-0.60 | |
Silicon (Si) | ≤0.30 | ≤0.30 | |
Nickel (Ni) | 28.5-29.5 | 35.0-37.0 | |
Chromium (Cr) | - | - | |
Cobalt (Co) | 16.8-17.8 | - | |
Iron (Fe) | Rest | Rest | |
Other Elements |
Alloy Grade | 20°C-100°C | 20°C-300°C | 20°C-500°C |
4J36 Invar Alloy | 1.2×10⁻⁶ /°C | 2.5×10⁻⁶ /°C | - |
4J29 Kovar Alloy | 4.6×10⁻⁶ /°C | 5.5×10⁻⁶ /°C | 6.2×10⁻⁶ /°C |
Alloy Grade | 4J36 Invar Alloy | 4J29 Kovar Alloy |
Density (g/cm³) | 8.1 | 8.2 |
Tensile Strength (MPa) | 500-600 | 600-700 |
Yield Strength (MPa) | 250-350 | 300-400 |
Hardness (HV) | 150-200 | 200-250 |
Alloy Grade | 4J36 Invar Alloy | 4J29 Kovar Alloy |
Electrical Resistivity (10⁻⁶ Ω·cm) | 80 | 50 |
Thermal Conductivity (W/m·K) | 10-12 | 16-18 |
Steps | DZX Do | Time |
Confirmation of product parameters and application | We confirm the product according to the demand | Immediate |
Sample customization | In stock or confirm OEM/ODM customization | Immediate |
Production and processing | Confirmation of production as well as product testing | 7-15 days |
Packaging and Transportation | Using carton + preservative film + pallet | According to the national |
Verify performance through thermal expansion test reports and composition analysis provided by the supplier.
Typically requires cleaning to remove impurities; polishing or coating may be applied based on use.
Highly suitable, with low expansion ensuring stability for precision components in demanding environments.
Supports precision forging, machining, and welding, requiring precise processes to preserve properties.
Maintains minimal expansion, ensuring dimensional stability under temperature fluctuations.
Aerospace, electronics, precision instruments, optical equipment, and high-temperature sealing manufacturing.
Low thermal expansion coefficient, high dimensional stability, corrosion-resistant, ideal for precision applications.
dlx-group@dlx-alloy.com | |
Phone | 0086-1990 6119 641 |
Address | NO.32 West Taihu Road, Xinbei District, Changzhou, Jiangsu,China |