Incoloy 800 and Inconel 600: What are the differences between them?
Incoloy 800 and Inconel 600: What are the differences between them?
Incoloy 800 (iron-nickel-chromium alloy) has a higher iron content and lower nickel content than Inconel 600 (nickel-chromium alloy). Therefore, Incoloy 800 is generally more cost-effective and suitable for high-temperature applications such as furnace components. Inconel 600, on the other hand, offers superior high-temperature strength and better oxidation resistance, performing well in demanding aerospace and nuclear applications, but at a higher price. The key difference lies in the composition: Inconel is primarily nickel-based (nickel content greater than 50%), while Incoloy has a lower nickel content and a higher iron content. Incoloy 800 also exhibits better resistance to carburization and is as easy to machine as stainless steel.
What are the temperature limits for Incoloy 800?
If the deformation is 5% or greater, the hot working temperature range for Incoloy 800H and 800HT alloys is 1740–2190°F (950–1200°C). If the degree of hot deformation is less than 5%, the recommended hot working temperature range is 1560–1920°F (850–1050°C).
Inconel 600 (Nickel-Chromium Alloy)
Composition: High nickel content (>50%), chromium.
Properties: Excellent high-temperature strength, superior oxidation and corrosion resistance, good machinability.
Applications: Critical aerospace components, nuclear energy, chemical industry (acids, sulfides).
Incoloy 800 (Iron-Nickel-Chromium Alloy)
Composition: Lower nickel content (30-35%), higher iron content.
Properties: Good high-temperature strength, better carburization resistance, easy to machine (similar to stainless steel), lower cost.
Applications: Furnace components, heat exchangers, process piping, non-critical high-temperature applications.
Chemical composition of Inconel 600 and Incoloy 800
| Grade | Ni | Cr | C | S | Si | Mn | Cu | Fe | Al | Ti |
|---|---|---|---|---|---|---|---|---|---|---|
| Inconel 600 | 72.00 min | 14.00 – 17.00 | 0.15 max | 0.015max | 0.50 max | 1.00 max | 0.50 max | 6.00 – 10.00 | – | – |
| Incoloy 800 | 30.00 – 35.00 | 19.00 – 23.00 | 0.10 max | 0.015 max | 1.00 max | 1.50 max | 0.75 max | 39.50 min | 0.15 – 0.60 | 0.15 – 0.60 |
Alloy 800 exhibits better weldability
Inconel 600 Vs Incoloy 800 Mechanical properties
| Element | Tensile Strength | Yield Strength (0.2%Offset) | Melting Point | Density | Elongation |
|---|---|---|---|---|---|
| Inconel 600 | Psi – 95,000 , MPa – 655 | Psi – 45,000 , MPa – 310 | 1413 °C (2580 °F) | 8.47 g/cm3 | 0.4 |
| Incoloy 800 | Psi – 75,000 , MPa – 520 | Psi – 30,000 , MPa – 205 | 1385 °C (2525 °F) | 7.94 g/cm3 | 0.3 |
Nickel 600 can withstand temperature upto 1,093°C
Comparison of Inconel 600 and 800 Alloys – Temperature Resistance Characteristics
Secondly, these two alloys differ in their temperature resistance characteristics. Inconel 600 maintains structural stability at temperatures up to 1100°C (2012°F), making it suitable for applications requiring exposure to oxidizing atmospheres and sulfidizing environments. On the other hand, Inconel 800 exhibits superior oxidation and carburization resistance at temperatures up to 1300°F (704°C), making it an ideal choice for high-temperature furnace components and other demanding applications.
Comparison of Inconel 600 and 800 Alloys – Application Areas
Finally, the application areas of these two alloys differ due to their unique characteristics. Inconel 600 is widely used in chemical equipment, furnace components, and heat treatment equipment due to its resistance to both oxidizing and reducing atmospheres. Inconel 800, on the other hand, is used in high-temperature furnaces, petrochemical processing, and nuclear power plants, where its excellent oxidation and carburization resistance are crucial.
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 incoloy 800 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 incoloy 800 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 incoloy 800, 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.
