Incoloy 800 (UNS N08800 / W.Nr. 1.4876)
Incoloy 800 (UNS N08800 / W.Nr. 1.4876) is a nickel-chromium alloy with good strength and excellent resistance to oxidation and carburization in high-temperature atmospheres. It also resists corrosion by many aqueous environments. The alloy maintains a stable, austenitic structure during prolonged exposure to high temperatures. Used for process piping, heat exchangers, carburizing equipment, heating element sheathing, and nuclear steam-generator tubing.
Equivalent Grades
Trademark | GB | GOST | ASTM | UNS | DIN | W.Nr. | NF | BS | JIS | SS |
Incoloy 800 | NS1101 NS111 | – | Incoloy 800 | N08800 | X10NiCrAlTi32-20 | 1.4876 | – | NA15 | NCF 800 NCF 2B | – |
Chemical Composition, %
Alloy | C | Si | Mn | P | S | Cr | Ni | Al+Ti | Ti | Cu | Fe |
Incoloy 800 | ≤0.10 | ≤1.00 | ≤1.50 | ≤0.03 | ≤0.02 | 19.0-23.0 | 30.0-35.0 | 0.15-0.60 | 0.15-0.60 | ≤0.75 | Bal |
Typical Physical and Mechanical Properties (RT, Solution annealed)
Density, g/cm3 | Melting Point, ℃ | Tensile Strength, MPa | Yield Strength, MPa | ELongation, % | Hardness, HB |
8.00 | 1357-1375 | 600 | 275 | 45 | – |
Available Products and Specifications
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 | – |
Others | ASTM B366/ASME SB366(Fittings) |
Features
- High temperature strength
- High creep rupture strength
- Resistant to oxidation and carburization in high temperature environments
- Good corrosion resistance in many acidic environments
- Good resistance to many sulfur-containing atmospheres
Applications
- Industrial furnaces
- Heat exchangers
- Hydrocarbon cracking
- Ethylene furnace quench boilers
- Valves, fittings and other components exposed to corrosive attack from 1100-1800° F
- Chemical & Petrochemical processing