Inconel 706, also referred to as Alloy 706 and designated as UNS N09706, is a precipitation-hardenable nickel-iron-chromium alloy. It is engineered to provide an excellent combination of high strength and good fabricability, making it easier to machine and weld compared to other superalloys such as Inconel 718. The alloy exhibits outstanding resistance to corrosion and oxidation, while maintaining structural stability at elevated temperatures. Its controlled chemistry allows for reliable performance in demanding environments.
Inconel 706 is primarily used in aerospace, gas turbines, and power generation sectors. It is especially valued for turbine discs, shafts, rings, fasteners, and other critical rotating components where both mechanical strength and thermal stability are required. The alloy is available in multiple forms including Inconel 706 round bars, forgings, billets, sheets, plates, and precision parts, offering a wide range of solutions for high-performance engineering applications.
Elements | Content (%) |
---|---|
Nickel, Ni | 39-44 |
Iron, Fe | 38 |
Chromium, Cr | 14.5-17.5 |
Niobium, Nb | 2.50-3.30 |
Cobalt, Co | ≤ 1 |
Titanium, Ti | ≤ 0.40 |
Copper, Cu | ≤ 0.35 |
Manganese, Mn | ≤ 0.35 |
Silicon, Si | ≤ 0.35 |
Carbon, C | ≤ 0.30 |
Aluminum, Al | ≤ 0.060 |
Phosphorous, P | ≤ 0.020 |
Sulfur, S | ≤ 0.015 |
Boron, B | ≤ 0.0060 |
Properties | Metric | Imperial |
---|---|---|
Density | 8.05 g/cm³ | 0.291 lb/in³ |
Melting point | 1360°C | 2480°F |
Properties | Metric | Imperial |
---|---|---|
Tensile strength | 757 MPa | 109800 psi |
Yield strength (at strain 0.200%) | 383 MPa | 55500 psi |
Poisson’s ratio (precipitation hardened, calculated by mfr) | 0.382 | 0.382 |
Modulus of elasticity (precipitation hardened, dynamic method) | 210 GPa | 30500 ksi |
Elongation at break | 47% | 47% |
Bars, Forgings and Rings | SAE AMS 5701,SAE AMS 5702,SAE AMS 5703 |
Sheet, Strip and Plate | SAE AMS 5605,SAE AMS 5606 |
Standard product forms of Inconel 706/UNS N09706 are pipe, tube, sheet, strip, plate, round bar, flat bar, forging stock, hexagon and wire. The products are available in a wide variety of sizes. Please contact us at [email protected] for full information.