Comparative Study: Haynes 230 vs Inconel 718 Alloy
Inconel 718 offers excellent high-temperature strength and corrosion resistance, making it ideal for demanding applications such as gas turbines and rocket engines; however, it is more expensive and more difficult to process. Haynes 230, on the other hand, excels in high-temperature environments up to approximately 1400°F (760°C) due to its good strength, oxidation resistance, and superior high-temperature ductility and creep resistance compared to some other alloys, making it suitable for furnace components and other industrial heating applications. The choice between the two depends primarily on the specific temperature, strength, and cost requirements of the application.
What are the properties of Haynes 230 alloy?
HAYNES 230 (UNS N06230) alloy is a nickel-chromium-tungsten-molybdenum alloy that combines excellent high-temperature strength, outstanding corrosion resistance under long-term exposure to oxidizing environments up to 2100°F (1149°C), excellent resistance to nitriding, and excellent long-term thermal stability.
Haynes 230
Advantages: Excellent strength and oxidation resistance at high temperatures, especially up to approximately 1400°F (760°C). It also exhibits superior ductility and creep resistance at high temperatures compared to some other alloys.
Applications: Gas turbine components, industrial furnace components, and chemical equipment.
Disadvantages: Its high-temperature strength is lower than Inconel 718.
Inconel 718
Advantages: Excellent high-temperature strength and creep rupture strength up to approximately 1300°F (700°C). It also has excellent corrosion resistance.
Applications: Aerospace components, rocket engines, nuclear reactors, and other high-stress, high-temperature applications.
Disadvantages: Higher price, poorer machinability, and more specialized welding requirements.
Comparison of Chemical Composition
| Element | Haynes 230 (Approximate Percentage) | Inconel 718 (Approximate Percentage) |
|---|---|---|
| Nickel (Ni) | 58-60% | 50-55% |
| Chromium (Cr) | 20-22% | 18-21% |
| Tungsten (W) | 14-16% | Trace amounts |
| Molybdenum (Mo) | 1-2% | 2.8-3.3% |
| Iron (Fe) | Minor amounts | 18-20% |
| Niobium (Nb) | Trace amounts | 4.75-5.5% |
| Lanthanum (La) | Present | Not specified |
| Titanium (Ti) | Not specified | 0.65-1.15% |
| Aluminum (Al) | Not specified | 0.20-0.80% |
Key Differences and Considerations
Temperature: Inconel 718 has a higher operating temperature range than Haynes 230, but Haynes 230 performs well in the 700-1400°F (371-760°C) range.
Corrosion Resistance: Inconel 718 exhibits superior corrosion resistance.
Cost and Machinability: Haynes 230 is generally more economical and easier to machine than Inconel 718, which can be very expensive and difficult to machine.
Creep Resistance: Haynes 230 exhibits good creep resistance, especially at lower temperatures, and in some cases, its creep resistance at temperatures up to 900°C is superior to other alloys. Inconel 718 also exhibits excellent creep rupture strength at temperatures up to 1300°F (700°C).
Applications: The optimal choice depends on the specific application's required temperature, strength, and cost constraints.
| Feature | Haynes 230 | Inconel 718 |
|---|---|---|
| Composition | Nickel, cobalt, chromium, each contributing to the excellent corrosion resistance | Nickel, chromium, niobium, iron, molybdenum |
| Applications | Exhaust systems, furnace parts, medical implants | Jet engines, gas turbines, precision machining components |
| Thermal Properties | Higher melting point | Better creep strength and oxidation resistance at lower temperatures |
| Mechanical Properties | Tensile Strength: 930 MPa, Yield Strength: 550 MPa | Tensile Strength: 1040 MPa, Yield Strength: 690 MPa |
| Corrosion Resistance | Good | Superior |
| Cost | Cheaper | More expensive |
| Machinability | Easier, especially when considering the additional processing flexibility it offers | More challenging |
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
Gnee Steel is a supplier of Inconel 718 alloy, offering a wide range of products including: seamless pipe (sizes: 4-219 mm; thickness: 0.5-20 mm); welded pipe (sizes: 5.0-1219.2 mm; thickness: 0.5-20 mm); plates (thickness: 0.1 to 100 mm; width: 10-2500 mm); strips; alloy round bars (diameter: 3-800 mm); flat bars (thickness: 2-100 mm; width: 10-500 mm); hexagonal bars (size: 2-100 mm); wire rods; and extruded profiles. We collaborate with steel mills to provide our customers with Inconel 718 alloy products that meet or exceed numerous leading industry standards, including ASTM, ASME, SAE, AMS, ISO, DIN, EN, and BS standards.
Gnee Steel stocks and sells Inconel 718, pipes, plates, strips, round bars, flat bars, forged billets, hexagonal steel, wire rods, and extruded profiles. Please feel free to contact us at ss@gneesteel.com for a quote.
