About Alloy
Incoloy 800HT (UNS N08811 / W.Nr. 1.4959) is a high-temperature alloy that is similar to Incoloy 800H, but with a slightly different composition and properties. It is a nickel-chromium-iron alloy that is known for its excellent resistance to corrosion, high-temperature oxidation, and creep.
Incoloy 800HT has a higher carbon content than Incoloy 800H, which gives it improved strength and creep resistance at high temperatures. It also has a higher titanium content, which helps to reduce the risk of sensitization.
Incoloy 800HT is used in applications where high-temperature strength and resistance to oxidation and corrosion are critical, such as in heat exchangers, boilers, and other high-temperature equipment in the power generation and chemical processing industries. It is also used in the aerospace industry and in marine engineering.
In terms of its properties, Incoloy 800HT has a high melting point, excellent resistance to oxidation and corrosion, and good weldability. It is also resistant to pitting and crevice corrosion, making it suitable for use in harsh environments.
Overall, Incoloy 800HT is a high-performance alloy that is valued for its excellent high-temperature properties, corrosion resistance, and weldability, making it an ideal material for a wide range of industrial applications.
Product Form
Rod, Bar, Wire and Forgings: ASTM B408/ASME SB408, ASTM B564/ASME SB564, ISO 9723/9724/9725
Plate, Sheet and Strip: ASTM A240/A480/B409/B906/ASME SA240/SA480/SB409/SB906, ISO 6208
Pipe and Tube: ASTM B163/ASME SB163, ASTM B407/B829/ASME SB407/SB829, ASTM B514/B775/ASME SB514/SB775, ASTM B515/B751/ASME SB515/SB751, ISO 6207
Welding Product:--
Fitting: ASTM B366/ASME SB366
Chemical Composition
| Alloy | C | Si | Mn | P | S | Cr | Ni | Al+Ti | Ti | Fe |
| Incoloy 800HT | 0.06-0.10 | ≤0.10 | ≤3.00 | ≤0.03 | ≤0.02 | 19.0-23.0 | 30.0-35.0 | 0.25-1.20 | 0.15-0.60 | ≥39.5 |
Property
| Density, g/cm3 | Melting Point, ℃ | Tensile Strength, MPa | Yield Strength, MPa | ELongation, % | Hardness, HB |
| 8.00 | 1357-1375 | 531 | 200 | 52 | – |
Application
Heat exchangers
Boilers
High-temperature equipment in the power generation industry
High-temperature equipment in the chemical processing industry
Aerospace industry
Marine engineering
Valves
Pumps
Other high-temperature components
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