Nickel-Chromium-Iron Alloy
Inconel 718
Inconel 718 is a nickel-chromium-iron alloy known for its exceptional yield strength, fatigue resistance, and oxidation resistance at temperatures below 650°C. It offers superior corrosion resistance, radiation resistance, and long-term structural stability, making it ideal for demanding high-temperature applications. The alloy also provides excellent machinability and weldability, allowing for the production of complex-shaped components used in aerospace, power generation, and industrial applications.
Specifications
Plate / Sheet
- Thickness: 0.5mm-100mm
- Width: 500mm-2000mm
- Length: 1000mm-6000mm
Rod
- Diameter: 5mm-500mm
- Length: 500mm-6000mm
Tube
- Outer Diameter: 6mm-273mm
- Wall Thickness: 0.5mm-50mm
- Length: ≤ 12000mm
Wire
- Diameter: 0.1mm-10mm
- Delivery Forms: Coiled wire or straight wire
Chemical Composition
- Nickel (Ni): 50-55
- Chromium (Cr): 17-21
- Iron (Fe): Rest
- Carbon (C): ≤0.08
- Manganese (Mn): ≤0.35
- Silicon (Si): ≤0.35
- Molybdenum (Mo): 2.8-3.3
- Niobium (Nb)+ Tantalum (Ta): 4.75-5.5
- Sulfur (S): ≤0.01
- Cobalt (Co): ≤10
- Aluminum (Al): 0.2-0.8
- Copper (Cu): ≤0.3
Physical & Mechanical Properties
| Inconel 718 | Solid Solution Strengthened |
| Tensile Strength (Rm N/mm²) | 965 |
| Yield Strength (Rp 0.2N/mm²) | 550 |
| Elongation at Break A5 (%) | 30 |
| Brinell Hardness (HB) | ≤363 |
| Density (g/cm³) | 8.24 |
| Melting Point (°C) | 1260-1320°C |
