Comparison of high-temperature strength between Inconel 718 bolts and A286 bolts
Comparison of high-temperature strength between Inconel 718 bolts and A286 bolts
Inconel 718 typically exhibits excellent high-temperature strength, especially at extremely high temperatures, while A286 is a more economical option, offering high strength and corrosion resistance up to approximately 700°C (1292°F). The main advantage of Inconel 718 lies in its ability to maintain high strength at extreme temperatures and its excellent weldability after age hardening, while A286 is easier to process.
What are the differences between A286 and Inconel 718?
A286 vs. Inconel 718: Inconel 718 is renowned for its superior performance in ultra-high temperature environments. However, for applications requiring high strength, moderate temperature resistance, and better formability, A286 offers a cost-effective alternative.
Inconel 718 can withstand the same temperatures as A286, with a maximum operating temperature of 1300°F (764°C). Compared to A286 bolts, Inconel 718 bolts are significantly stronger, with a minimum tensile strength of 180 ksi.
Inconel 718 Alloy Bolts
High Temperature Strength: Excellent performance in ultra-high temperature environments.
Key Advantages: Maintains high strength and excellent fatigue performance even at extremely high temperatures.
Weldability: Can be age-hardened after welding; does not undergo spontaneous hardening.
Considerations: Due to its high hardness, it is difficult and costly to process.
A286 Alloy Bolts
High Temperature Strength: Excellent creep strength and high temperature performance, up to approximately 700°C (1292°F).
Key Advantages: More economical, efficient, and easier to process. Weldability: Good corrosion resistance at temperatures up to 1300°F (704°C). Considerations: Compared to Inconel 718, its strength at extreme temperatures is limited.
Comparison: Inconel 718 vs. A286
| Feature | Inconel 718 | A286 |
|---|---|---|
| Base Metal | Nickel | Iron |
| High-Temp Strength | Superior, especially at ultra-high temperatures (up to 1300°F or 700°C for strength and 1800°F or 982°C for oxidation resistance) | Excellent at moderate high temperatures (up to 1300°F or 700°C) |
| Machinability | More difficult to machine | Easier to machine |
| Formability | More difficult to form | Better formability |
| Corrosion Resistance | Excellent | Excellent up to 1300°F (700°C) |
| Cost | More expensive | More cost-effective |
| Weldability | Excellent, age-hardened with high weldability | Good |
| Primary Applications | High-stress parts in jet engines, like turbine disks and shafts | Jet engine components, fasteners, and other high-temperature applications where cost is a factor |
Summary Table: Inconel 718 vs. A286
| Feature | Inconel 718 | A286 |
|---|---|---|
| Max Continuous Service Temp | Ultra-high temperatures | Up to 700°C (1292°F) |
| Cost | High | Lower |
| Machinability | Difficult | Easier |
| Primary Advantage | Superior strength at extreme temperatures | High strength at moderate high temperatures at a lower cost |
Why Choose Gnee Nickel Alloy (Supplier Example)?
✅ Large stock of Inconel alloy tubes/bars/plates/fittings/coils, fast shipping.
✅ Factory direct sales, highly competitive prices, excellent value for money.
✅ Comprehensive quality assurance: Material Testing Certificate (MTC), chemical composition certificate, and mechanical property certificate.
✅ Value-added services: slitting, cutting, polishing, surface treatment.
✅ Worldwide shipping, secure and reliable packaging, and provision of export-required documents.
Email: ss@gneemetal.com
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.
