What are the differences between Inconel 600 and 718 alloys?
What are the differences between Inconel 600 and 718 alloys?
The main differences between Inconel 600 and 718 lie in their strength and composition. Inconel 718, due to the addition of niobium and molybdenum, exhibits significantly improved strength through precipitation strengthening. In contrast, Inconel 600 is a solid solution-strengthened alloy, enhancing its strength through cold working, and possesses good oxidation and corrosion resistance. Inconel 718 is primarily used in high-strength applications such as aerospace and gas turbines, while Inconel 600 is commonly used in chemical processing and furnace components.
What are the uses of Inconel 600?
It is used in the manufacture of tempering furnaces, muffle furnaces, roller hearth furnaces, and other furnace components, as well as heat treatment baskets and trays. In the aerospace industry, Inconel 600 alloy is used to manufacture various engine and fuselage components that must withstand high temperatures, such as wiring harnesses, exhaust bushings, and turbine seals.
Difference Between Inconel 600 and 718
Inconel 600
Inconel 600, also known as Nicrofer 716, Pyromet Alloy 600, and Nicrimphy 600, is a nickel-chromium alloy with excellent oxidation resistance and high-temperature corrosion resistance. Due to its high nickel content, Inconel 600 exhibits strong resistance to chloride stress corrosion cracking. Inconel 600 requires no aging hardening treatment and can be hardened and strengthened through cold working alone. Inconel 600 can operate in a temperature range from low temperatures to 700°F (370°C).
Inconel 600 Composition
| Grade | Ni | Cr | Fe | C | Mn | S | Si | Cu |
|---|---|---|---|---|---|---|---|---|
| Inconel 600 | 72.0 min | 14.0 – 17.0 | 6.0 – 10.0 | 0.15 max | 1.0 max | 0.015 max | 0.5 max | 0.5 max |
Inconel 600 Equivalent Grades
| STANDARD | WERKSTOFF NR. | UNS | GOST | AFNOR | JIS | BS | EN | OR |
|---|---|---|---|---|---|---|---|---|
| Inconel 600 | 2.4816 | N06600 | МНЖМц 28-2,5-1,5 | NC15FE11M | NCF 600 | NA 13 | NiCr15Fe | ЭИ868 |
Inconel 600 Melting Point, Density and Tensile Strength
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation | |
|---|---|---|---|---|---|
| 600 | 8.47 g/cm3 | 1413 °C (2580 °F) | Psi – 95,000 , MPa – 655 | Psi – 45,000 , MPa – 310 | 40 % |
Inconel 718
Inconel 718 is a precipitation-hardening nickel-based alloy designed to exhibit extremely high yield strength, tensile strength, and creep rupture strength at temperatures up to 1300°F (700°C). Inconel 718 exhibits a slow age-hardening response, thus avoiding spontaneous hardening during heating and cooling, allowing for annealing and welding.
Inconel 718 Chemical Composition
| Grade | C | Mn | Si | Fe | S | Cr | Al | Ni | |
| 718 | min. | – | – | – | bal | – | 17.0 | 0.2 | 50.0 |
| max. | 0.08 | 0.35 | 0.35 | bal | 0.01 | 21.0 | 0.8 | 55.0 | |
Inconel 718 Melting Point, Density and Tensile Strength
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 825 | 8.14 g/cm3 | 1400 °C (2550 °F) | Psi – 80,000 , MPa – 550 | Psi – 32,000 , MPa – 220 | 30 % |
Inconel 718 Equivalent Grades
| Grade | UNS No | Old British | Euronorm | GOST | Japanese JIS | ||
| BS | En | No | AFNOR | ||||
| Inconel 718 | N07718 | – | – | 2.4668 | – | – | – |
Why Choose Gnee Nickel Alloy (Supplier Example)?
✅ Large stock of Incoloy 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 600 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 600 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 600, 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.
