ASTM B407 UNS N08810 Seamless Nickel Alloy Steel Tube
ASTM B407 UNS N08810 Seamless Nickel Alloy Steel Tube
ASTM B407 UNS N08810 is a seamless nickel-chromium alloy steel tube (commonly known as Incoloy 800H) renowned for its exceptional high-temperature strength, oxidation and corrosion resistance, and excellent machinability. Due to its high creep and fracture strength even at temperatures above 600°C (1100°F), it is suitable for high-temperature applications in industries such as petrochemicals, power generation, and chemical processing. Its key features include the pressure resistance provided by its seamless construction and the ability to be welded and machined using standard methods.
What is the difference between Incoloy 600 and Incoloy 800?
Incoloy 800 has a higher iron content and a lower nickel content. Incoloy 600 is less expensive. Furthermore, due to its affordability, this alloy is considered an ideal material for high-temperature applications.
Incoloy 800 Alloy Steel Seamless Pipe Chemical Composition
| Element | Content (%) |
| Iron, Fe | ≥39.5 |
| Nickel, Ni | 30-35 |
| Chromium, Cr | 19-23 |
| Manganese, Mn | ≤1.5 |
| Others | Remainder |
Incoloy 800 Alloy Steel Seamless Pipe Physical Properties
| Properties | Metric | Imperial |
| Density | 7.94 gm/cm3 | 0.287 lb/in3 |
Incoloy 800 Alloy Steel Seamless Pipe Mechanical Properties
| Properties | Metric | Imperial |
| Tensile strength(annealed) | 600 MPa | 87 ksi |
| Yield strength(annealed) | 275 MPa | 39.9 ksi |
| Elongation at Break | 45% | 45% |
Hot working
| Incoloy Alloy 800 | up to about 1500 Deg F (816°C) |
| Incoloy Alloy 800H | 1100 Deg F (593°C) to 1800°F (982°C) |
Application Areas
Chemical and Petrochemical Industries: Used for process piping, and equipment in ethylene production and similar processes.
Power Generation: Used for steam generator tubes and heat exchangers.
Heat Treatment: Used for heat treatment equipment and fixtures.
Other Industries: Also used in pulp and paper, petroleum processing, and as sheathing for electric heating elements.
Manufacturing and Specifications
Seamless Structure: Seamless structures offer better pressure resistance compared to welded pipes.
Difference between Seamless Pipes and Seamless Tubes: "Seamless pipe" generally refers to pipes with a larger diameter, while "seamless tube" refers to pipes with a smaller diameter.
Heat Treatment: Final properties largely depend on the heat treatment process, which is specified by standards.
Mechanical Properties: Yield strength and tensile strength vary depending on the specific heat treatment process used.
Why Choose Gnee Nickel Alloy (Supplier Example)?
✅ Large stock of Incoloy 800/800H/800HT alloy tubes/bars/plates/fittings, fast shipping.
✅ Factory direct sales, highly competitive prices, excellent value for money.
✅ Comprehensive quality assurance: Material Testing Certificate (MTC), chemical composition certificate, and mechanical properties certificate.
✅ Value-added services: slitting, cutting, polishing, surface treatment.
✅ Worldwide shipping, secure and reliable packaging, and provision of export-required documents.
Email: ss@gneesteel.com
Gnee Steel is a supplier of Incoloy 800/800H/800HT steel, 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 800 series alloys, meeting or exceeding numerous leading industry standards, including ASTM, ASME, SAE, AMS, ISO, DIN, EN, and BS standards.
Gnee Steel stocks and sells Incoloy 800/800H/800HT steel, including 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.
