Haynes 282 and Inconel 718 are both high-performance nickel-based superalloys widely used in aerospace, gas turbines, power generation, and oil and gas industries. Inconel 718 offers high strength and ease of age hardening, while Haynes 282 exhibits superior creep resistance and thermal stability, especially at temperatures above 650°C.
For procurement teams, understanding material properties, costs, and processing considerations is crucial to ensure optimal performance, compliance, and cost-effectiveness.
What kind of material is Inconel 718?
Inconel 718 is a high-performance nickel-chromium-based superalloy known for its exceptional strength, corrosion resistance, and high-temperature performance (from cryogenic temperatures to over 1300°F), making it ideal for demanding aerospace, gas turbine, and industrial applications. It is typically strengthened through a precipitation hardening process. Its main components include significant amounts of iron, niobium (columbium), and molybdenum, and it exhibits excellent weldability and formability.
What is Haynes 282 used for?
HAYNES® 1 282® alloy was first available for commercial use in 2005. 282® alloy is a precipitation strengthened alloy whose primary alloying elements are Ni-Cr-Co-Mo-Ti-Al. Its primary commercial applications are in the aerospace, industrial gas turbine, and automotive industries.
haynes 282 vs inconel 718：Chemical Composition
| Element | Inconel 718 (%) | Haynes 282 (%) |
|---|---|---|
| Nickel (Ni) | 50–55 | 52–56 |
| Chromium (Cr) | 17–21 | 19–21 |
| Iron (Fe) | Balance | 12–16 |
| Niobium + Tantalum (Nb+Ta) | 4.75–5.50 | 1.4–3.0 |
| Molybdenum (Mo) | 2.8–3.3 | 8.0–10.0 |
| Titanium (Ti) | 0.65–1.15 | 1.2–1.5 |
| Aluminum (Al) | 0.2–0.8 | 0.6–0.9 |
| Cobalt (Co) | - | 8.0–10.0 |
haynes 282 vs inconel 718：Mechanical Properties Comparison (Aged / Heat Treated)
| Property | Inconel 718 | Haynes 282 |
|---|---|---|
| Yield Strength (0.2%) | 1,000–1,200 MPa | 850–1,050 MPa |
| Tensile Strength | 1,250–1,450 MPa | 950–1,200 MPa |
| Elongation | 12–20% | 15–25% |
| Hardness | 36–45 HRC | 30–40 HRC |
| Creep Resistance | Up to 700°C | Up to 750–800°C |
| Fatigue Resistance | Excellent | Excellent at high temperature |
haynes 282 vs inconel 718：Physical Properties
| Property | Inconel 718 | Haynes 282 |
|---|---|---|
| Density | 8.19 g/cm³ | 8.3 g/cm³ |
| Melting Range | 1,260–1,336 °C | 1,360–1,400 °C |
| Thermal Conductivity | ~11.4 W/m·K | ~12 W/m·K |
| Coefficient of Thermal Expansion | ~13.0 µm/m·°C | 13.2 µm/m·°C |
haynes 282 vs inconel 718：Fabrication & Machining Considerations
| Aspect | Inconel 718 | Haynes 282 |
|---|---|---|
| Machinability | Moderate | Slightly more difficult due to higher Mo & Co |
| Weldability | Excellent | Good, requires careful heat control |
| Hot Workability | Good | Excellent |
| Heat Treatment | Solution + aging | Solution + aging |
Can Haynes 282 replace Inconel 718 in all applications?
No, Haynes 282 cannot replace Inconel 718 in all applications, as they each have advantages in different temperature ranges and application areas; Haynes 282 offers better creep resistance at higher temperatures (above approximately 1200°F/650°C), while Inconel 718 has higher strength at room and intermediate temperatures and is widely used in traditional aerospace/oil and gas applications.
If you have project requirements for Inconel 718 , we welcome your order. GNEE has a large inventory of popular products for you to choose from. It can be processed into various practical product forms, including plates, coils, tubes, bars, wires, etc. For detailed chemical composition information and free samples, please contact our factory immediately. We offer competitive prices and excellent service.
