ASTM B407 incoloy 800 nickel alloy steel cold drawn tube
ASTM B407 incoloy 800 nickel alloy steel cold drawn tube
ASTM B407 Incoloy 800 tubing is a cold-drawn nickel-iron-chromium alloy steel tube known for its exceptional high-temperature strength, excellent oxidation/corrosion resistance, and carburization resistance. It is widely used in the power generation, chemical, and petrochemical industries. It offers a good balance of performance and cost. Alloys such as 800H and 800HT exhibit higher high-temperature creep and fatigue strength due to controlled carbon, aluminum, and titanium content. The cold-drawing process ensures excellent cold-forming properties and a smooth, uniform surface.
What is the difference between Incoloy 800 and 800 alloy?
Incoloy 800 is primarily used in applications up to 1100°F, while 800H and 800HT alloys are typically used in applications above 1100°F that require creep and rupture resistance.
Incoloy 800 Alloy Steel Seamless Tube 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 Tube Physical Properties
| Properties | Metric | Imperial |
| Density | 7.94 gm/cm3 | 0.287 lb/in3 |
Incoloy 800 Alloy Steel Seamless Tube 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% |
Applications for ASTM B407 UNS N08810 Tubing
1. Petrochemical and Refining
High nickel content (30-35%) and high chromium content (19-23%) prevent scaling and embrittlement in hydrocarbon processing.
2. Power Generation, Superheaters/Reheaters, Heat Recovery Steam Generators (HRSGs)
3. Chemical Processing, Catalytic Reactors, Waste Incineration Systems
4. Thermal Processing and Heat Treatment Annealing Furnaces
5. Oil and Gas (Upstream/Downstream)
6. Aerospace: Exhaust systems and afterburners requiring thermal fatigue resistance.
7. Cryogenic Engineering: Maintaining good toughness allows for low-temperature applications (down to -200°C).
Common Applications
Power Generation: Used in steam generators, heat exchangers, and turbine components.
Petrochemical and Chemical: Used in process piping and equipment in refineries and chemical plants.
Heat Treatment: Used in furnace components and electric heating elements.
ASTM B407 Grades
Incoloy 800: Base alloy suitable for high-temperature applications up to 1100°F (593°C).
Incoloy 800H: Provides higher high-temperature creep and fatigue strength due to carefully controlled carbon content.
Incoloy 800HT: Further control of carbon, aluminum, and titanium content results in higher high-temperature strength.
Manufacturing
ASTM B407 specifies requirements for seamless and welded pipe.
Cold-drawn tubing is commercially available for straight, uniform, smooth, and defect-free performance.
Gnee Steel specializes in the production and sale of various nickel-based alloys, including Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel Alloy 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy Alloy 800, Incoloy 800H/HT, Incoloy 825, Monel Alloy 400, Monel K500, and high-temperature alloys. Gnee Steel's products are widely used in aerospace, chemical, electric power, automotive, and nuclear energy applications. We also offer customized alloy solutions tailored to customer needs. For alloy pricing inquiries or customized alloy solutions, please contact us for a quote at ss@gneesteel.com.
