ASTM B407 UNS N08811 bright nickel alloy pipe
ASTM B407 UNS N08811 bright nickel alloy pipe
ASTM B407 UNS N08811 bright nickel alloy tubing, also known as Incoloy 800HT, is a high-strength alloy widely used in high-temperature applications due to its excellent resistance to creep, oxidation, and carburization. Key factors include its nickel, iron, and chromium composition; its application in industries such as petrochemicals, power generation, and chemical processing; and its requirements for hydrostatic testing and material test certificates. The "bright" in the name refers to its surface treatment, typically the result of a bright annealing process that produces a smooth, clean surface.
What are the ASTM specifications for Incoloy 800?
This nickel-iron-chromium alloy, Incoloy 800 pipe, maintains its austenitic microstructure even when exposed to high temperatures. According to ASTM B407, these pipes are annealed at 1800°F for 15 minutes. After annealing, the 800 alloy seamless pipe is air-cooled.
Specifications for Incoloy Alloy 800HT Seamless Pipes
| Seamless Pipe / Tubing | Welded Pipe / Tubing | |
| Incoloy 800HT | ASTM B 407 / 163 | ASTM B 514 / 515 |
| ASME B 407 / 163 | ASME SB 514 / 515 |
Incoloy Alloy 800HT Seamless Pipes Tubing's Chemical Composition %
| Alloy 800HT | Ni | Fe | Cr | Cu | Ti | Al | C | Mn | S | Si | |
| 30.0-35.0 | 39.5 min | 19.0-23.0 | 0.75 max | 0.25-0.60 | 0.85-1.20 | 0.06-0.10 max | 1.5 max | 0.015 max | 1.0 max |
| NICKEL ALLOYS | TRADENAME | UNS NO. | WERKSTOFF NO. | DENSITY (8.8 G/CM3) |
| Alloy 800HT | Incoloy 800HT | N08811 | 1.4876 | 8.0 |
Applications
Heat treatment equipment and tooling
Steam generator piping and heating element jacketing
Chemical and petrochemical process equipment, such as ethylene production plants
Furnaces, superheaters, and reheaters
Process piping and heat exchangers
Paper and pulp industry
Manufacturing and Testing Standards
Standards: Pipe must comply with ASTM B407.
Material Test Certificate: A Material Test Certificate (MTC) is required.
Testing: All seamless pipe must be hydrostatically tested or nondestructively tested for leaks.
Grain Size: Annealed pipe must have an average grain size of ASTM No. 5 or coarser.
Availability: Delivered primarily in the annealed condition.
Incoloy 800HT shares many of the excellent properties of Incoloy 800H, including:
Excellent resistance to oxidation, sulfidation, and carburization
Improved creep and rupture resistance in high-temperature environments above 600°C (1100°F)
Resistance to high-temperature corrosion and long-term exposure
Easily machined using standard methods
Resistance to aqueous corrosion at moderate temperatures
Incoloy 800HT is widely used in a variety of high-temperature applications, including:
Hydrocarbon cracking
Industrial furnace and boiler components and equipment
Heat treatment equipment
Pressure vessels and heat exchangers
Chemical and petrochemical processing
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.
