Superalloy Casting
for Extreme Environments
Custom cast superalloy components for the most demanding applications. Designed for extreme temperatures, aggressive environments, and long-term reliability.
About Superalloys for Casting
Superalloys (or high-temperature/heat-resistant alloys) are high-performance materials engineered to maintain exceptional mechanical properties in extreme environments. Based on their principal alloying element, they are primarily categorized into nickel-based, cobalt-based, and iron-based families.
Because of their extreme strength and heat resistance, superalloys are notoriously difficult to machine or cold-form. Consequently, casting is often the most practical manufacturing method, allowing high-melting-point metals to be formed directly into complex, near-net shapes. The commonly used grades include Inconel 718, Inconel 625, and Hastelloy X.
Start Your Superalloy Casting Project
Share your material requirements, part drawings, and application details. Our engineers will help evaluate the right alloy and casting solution for your project.
Send Your ProjectInconel 625
Inconel 625 is a nickel-based superalloy known for its excellent corrosion resistance, high strength, and outstanding performance across a wide temperature spectrum, from -150°C up to 980°C, which makes it a universal material for critical components operating in extreme environments.
| Density | Melting Range | Tensile Strength | Yield Strength | Elongation | Hardness | Max Operating Temp. |
|---|---|---|---|---|---|---|
| 8.44 g/cm³ | 1290–1350°C (2354–2462°F) | 850–1000 MPa (123–145 ksi) | 400–550 MPa (58–80 ksi) | 25–45% | 200–300 HB | 980°C (1800°F) |
Inconel 713C
Inconel 713C is a precipitation-hardened, nickel-base cast superalloy engineered specifically for high-stress applications operating at elevated temperatures up to 927°C (1700°F). Common applications include automotive turbocharger rotors, gas turbine blades, and jet engine guide vanes where mechanical integrity under extreme centrifugal stress is critical.
| Density | Melting Range | Tensile Strength | Yield Strength | Elongation | Hardness | Max Operating Temp. |
|---|---|---|---|---|---|---|
| 7.96 g/cm³ | 1250–1330°C (2282–2426°F) | 800–950 MPa (116–138 ksi) | 600–750 MPa (87–109 ksi) | 2–6% | 330–400 HB | 900°C (1652°F) |
Inconel 718
Inconel 718 is one of the most widely used nickel-based superalloys. Its outstanding mechanical properties are maintained across a wide temperature range, making it suitable for demanding aerospace, energy, and industrial applications.
| Density | Melting Range | Tensile Strength | Yield Strength | Elongation | Hardness | Max Operating Temp. |
|---|---|---|---|---|---|---|
| 8.19 g/cm³ | 1260–1340°C (2300–2444°F) | 900–1100 MPa (131–160 ksi) | 500–800 MPa (73–116 ksi) | 10–25% | 330–450 HB | 700°C (1300°F) |
Hastelloy X
Hastelloy X is a nickel-chromium-iron-molybdenum superalloy engineered for exceptional oxidation resistance, matrix stability, and fabricability at elevated temperatures up to 1200°C (2200°F). Cast components in this grade are widely utilized in gas turbine combustion chambers, transition ducts, aircraft cabin heaters, and industrial furnace hardware where prolonged exposure to aggressive, high-temperature atmospheres is required.
| Density | Melting Range | Tensile Strength | Yield Strength | Elongation | Hardness | Max Operating Temp. |
|---|---|---|---|---|---|---|
| 8.22 g/cm³ | 1260–1355°C (2300–2471°F) | 750–850 MPa (109–123 ksi) | 300–400 MPa (44–58 ksi) | 25–35% | 180–250 HB | 1200°C (2192°F) |
K18 Nickel-Based Superalloy
K18 is one of the common cast nickel-based superalloys under the Chinese high-temperature alloy standard system. It’s also one of the most-used superalloys in YTD; another is Inconel 718. It is designed for high-temperature components requiring excellent creep resistance, oxidation resistance, and structural stability.
| Density | Melting Range | Tensile Strength | Yield Strength | Elongation | Hardness | Max Operating Temp. |
|---|---|---|---|---|---|---|
| 8.10 g/cm³ | 1260–1335°C (2300–2435°F) | 800–950 MPa (116–138 ksi) | 600–750 MPa (87–109 ksi) | 3–8% | 280–350 HB | 950°C (1742°F) |
How We Cast Superalloy
We cast superalloys through the investment casting process – our core capability as a foundry. With the Vacuum Induction Melting (VIM) furnace, we melt superalloys under strict vacuum conditions, eliminating any risk of atmospheric contamination and protecting active elements from oxidation, ensuring the final casting has precise chemical purity and high structural integrity.
Finishe Options for Superalloy Castings
Leveraging our in-house finishing capabilities and supply chain versatility, we provide turnkey solutions for your superalloy casting projects.
- Surface Cleaning: Immediate sandblasting and shot blasting after de-shelling to remove all scale and provide a uniform satin finish.
- Polishing: Manual and automated polishing lines to achieve strict surface roughness requirements.
- CNC Finishing: Multi-axis CNC machining centers equipped with specialized tooling to handle the severe work-hardening of nickel and cobalt alloys, ensuring tight dimensional tolerances.
- Coatings: Seamless integration of Thermal Barrier Coatings (TBC) and chemical passivation for extreme oxidation resistance.
