Gnee Steel is a professional manufacturer of Inconel 71 and Haynes 282 alloys. In addition, Gnee Steel also supplies Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel Alloy 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy Alloy 800, Incoloy 800H/HT, Incoloy 825, Monel Alloy 400, Monel K500, and high-temperature alloys. We specialize in the production and sales of alloy materials. Gnee Steel's products are widely used in aerospace, chemical, power, automotive, and nuclear energy industries, and we can provide customized alloy material solutions according to customer needs. For alloy material price inquiries or to request customized alloy material solutions, please feel free to contact us at ss@gneesteel.com for a quote.
Haynes 282 vs Inconel 718
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Haynes 282 vs Inconel 718
Haynes 282 is a γ' phase strengthened nickel-based superalloy that exhibits superior creep strength, thermal stability, and machinability compared to Inconel 718 at temperatures exceeding 1200°F (650°C). While Inconel 718 possesses high strength at moderate temperatures (< 1200°F), its strength decays more rapidly at higher temperatures, and its creep resistance is lower than that of Haynes 282.
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Does Inconel 718 undergo work hardening?
Inconel 718 is an extremely difficult material to process because of its high toughness, low thermal conductivity, and tendency to work harden. Furthermore, as a work-hardening material, Inconel 718 undergoes various plastic deformations during processing.
For medium- to high-temperature structural components requiring excellent long-term creep resistance, thermal stability above approximately 650°C (1200°F), and good weldability, Haynes 282 is generally the better choice. For applications requiring extremely high room-temperature and medium-temperature yield/tensile strength, a wide availability of various forging/forging forms, and long-standing experience in the oil and gas and aerospace industries, Inconel 718 remains the preferred choice. Ultimately, the suitable alloy depends on the operating temperature, required creep life, manufacturing process (welding-intensive or forging-based), and cost/supply constraints.
Chemical composition of Haynes 282 and Inconel 718
| Aspect | Haynes 282 Composition | Inconel 718 Composition | Key Functional Comparison |
|---|---|---|---|
| Primary Element | Nickel (~55%) | Nickel (50–55%) | |
| Chromium | ~19% | 17–21% | Both provide oxidation and corrosion resistance. |
| Cobalt | ~8% | - (not specified) | Higher cobalt content in Haynes 282 enhances high-temperature strength and oxidation resistance. |
| Iron | Trace additions | Balance (major alloying element) | Iron content in Inconel 718 is significant, while Haynes 282 contains only small amounts. |
| Molybdenum | ~2.5% | 2.8–3.3% | Both contribute to strength and corrosion resistance. |
| Niobium | - (not specified) | 4.75–5.5% | Provides precipitation strengthening in Inconel 718 (forms γ'' phase). |
| Aluminum & Titanium | Small additions (for strengthening phases) | Minor amounts (titanium: 0.65–1.15%, aluminum: 0.2–0.8%) | Both form strengthening γ' (Ni₃Al) and γ''/η phases; compositions and amounts tailored for respective alloy properties. |
| Main Strengthening Mechanism | Enhanced by cobalt and solid solution strengthening | Primarily precipitation strengthening via niobium (Ni₃Nb - γ'') | Haynes 282 relies more on solid-solution and cobalt-enhanced stability; Inconel 718 utilizes niobium-based precipitation hardening for high temperature strength. |
Haynes 282 and Inconel 718 Feature Comparison
| Characteristic | Haynes 282 | Inconel 718 |
|---|---|---|
| Tensile Strength | 1200–1400 MPa | 1240–1515 MPa |
| Yield Strength | 850–1100 MPa | 1035–1240 MPa |
| Elongation | 15–25% | 12–20% |
| Operating Temperature | 700–750°C | 700–750°C |
| Thermal Conductivity | ~12 W/m·K | ~11 W/m·K |
| Oxidation Resistance | Superior | Good |
| Weldability | Excellent | Good |
| Applications | Gas turbine components | Jet engine parts |
Haynes 282 and Inconel 718: Corrosion Resistance and Oxidation Resistance
Both alloys exhibit good oxidation and corrosion resistance at high temperatures. Inconel 718 is particularly resistant to chloride-induced stress corrosion cracking, while Haynes 282, due to its higher cobalt and aluminum content, demonstrates excellent oxidation resistance in air and combustion environments, forming a stable protective oxide layer.
Haynes 282 and Inconel 718: Machinability and Weldability
Haynes 282 is known for its excellent weldability and low tendency to machine cracking. It can be easily machined into complex geometries without extensive post-weld heat treatment. While Inconel 718 can be welded, it requires strict control of heat input and post-weld aging treatment to avoid hot cracking and maintain strength, making its machining more challenging.
Applications of Haynes 282 and Inconel 718
Both alloys can be used in extreme environments, but their application focuses differ slightly:
Haynes 282: Gas turbine engine components, combustion chamber linings, and aerospace structural components requiring long-term high-temperature creep resistance.
Inconel 718: Used in jet engine parts, rocket engine casings, turbine blades, and chemical processing equipment-applications requiring extremely high strength and corrosion resistance.
Why Choose Gnee as Your Nickel-Based Alloy Supplier
✅ Over 18 years of export experience, products sold to more than 80 countries
✅ Certified by ISO, SGS, and BV
✅ Global inventory of Inconel, Hastelloy, Incoloy, and Monel alloy tubing, plates, and bars
✅ Custom processing services available – including cutting, polishing, CNC machining, and packaging
✅ Fast delivery within 7-15 days, supported by global logistics partners
📦 Packaging and Shipping
All stainless steel products are packaged using the following methods:
Wooden pallets or crates
Moisture-proof packaging
Labels with furnace number, standard, and size labels
Shipped worldwide by sea, air, or express
