Inconel X-750 Nickel Alloy Forging Discs Propeller Blades for Ships Submarine Components
Inconel X-750 is a nickel-chromium alloy, similar to Inconel 625, but with additional alloying elements that enhance its strength and corrosion resistance at higher temperatures. It is particularly known for its excellent performance under conditions of high temperature and pressure, making it ideal for use in environments where oxidation and corrosion resistance are required alongside high strength. This alloy is often used in the manufacture of high-temperature gas turbine components, rocket-engine thrust chambers, and various other aerospace and nuclear reactors components. Here are some detailed characteristics and common specifications for Inconel X-750 forging discs:
- Nickel (Ni): Approximately 70%
- Chromium (Cr): 14% - 17%
- Iron (Fe): 5% - 9%
- Titanium (Ti): 2.25% - 2.75%
- Niobium (Nb): 0.7% - 1.2%
- Plus traces of aluminum, manganese, silicon, carbon, and copper.
- Density: About 8.28 g/cm³
- Melting Point: 1393°C - 1427°C (2540°F - 2600°F)
- Tensile Strength: Typically in the range of 910 MPa to 1,380 MPa, depending on the form and treatment.
- Yield Strength: Varies, but typically around 655 MPa for heat treated conditions.
- Elongation: Around 20% to 30%, depending on heat treatment and working conditions.
- High-Temperature Strength: Maintains good strength at temperatures up to 704°C (1300°F).
- Corrosion Resistance: Good resistance to a wide spectrum of corrosive environments.
- Oxidation Resistance: Excellent resistance up to 982°C (1800°F).
- Creep Resistance: Excellent resistance to creep and stress-rupture at high temperatures.
Specifications and Standards
- AMS 5667, 5668, 5670, 5671, and 5747: Covering various forms like bars, forgings, and rings.
- ASTM B637: Specifications for nickel-alloy (UNS N07750) rod, bar, and wire.
- Aerospace Industry: Mainly used in turbine components, including blades, rotors, and others, where high-temperature capacity is essential.
- Nuclear Reactors: Components exposed to high neutron flux.
- Heat-Treating Industry: Used in fixtures, furnace parts, and for heat-treating baskets.
The manufacture of Inconel X-750 forging discs involves heat-treating the alloy to enhance its mechanical properties, making it more suitable for critical applications that require high strength at elevated temperatures. The specific heat treatment processes can significantly affect the ultimate mechanical properties of the alloy, and thus, the forging discs can be customized further through solution treatment, stabilization, and precipitation hardening to meet specific application requirements.
The following table lists only some of the grades:
Grade | UNS | DIN |
Monel 400 | N04400 | W.Nr. 2.4360 |
Monel K-500 | N05500 | W.Nr. 2.4375 |
Inconel 625 | N06625 | W.Nr. 2.4856 |
Inconel 718 | N07718 | W.Nr. 2.4668 |
Inconel X-750 | N07750 | W. Nr. 2.4669 |
Inconel 600 | N06600 | W.Nr. 2.4816 |
Inconel 601 | N06601 | W.Nr. 2.4851 |
Incoloy 825 | N08825 | W.Nr. 2.4858 |
Incoloy A-286 | S66286 | W.Nr.1.4980 |
Hastelloy C-276 | N10276 | W.Nr.2.4819 |
Hastelloy C-22 | N06022 | W.Nr.2.4602 |
Hastelloy C-4 | N06455 | W.Nr.2.4610 |
Hastelloy B-3 | N10675 | W.Nr.2.4600 |
Hastelloy X | N06002 | W.Nr.2.4665 |
Hastelloy B-2 | N10665 | W.Nr.2.4617 |
