Incoloy 890 (UNS N08890)

Incoloy 890 (UNS N08890) is offering high strength along with excellent resistance to oxidation, carburization, and sulfidation at temperatures up to 2200°F (1200°C).

Equivalent Grades

Incoloy 890Incoloy 890N08890

Chemical Composition, %

Incoloy 8900.06-0.141.0-2.0≤1.5≤0.03≤0.01523.5-28.540.0-45.01.0-2.00.2-1.00.1-0.60.05-0.600.15-0.60≥17.3

Typical Physical and Mechanical Properties (RT, Solution annealed)

Density, g/cm3Melting Point, ℃Tensile Strength, MPaYield Strength, MPaELongation, %Hardness, HRB

Available Products and Specifications

Rod, Bar, Wire and ForgingsASTM B408
Plate, Sheet and StripASTM B409, ASTM B906
Pipe and TubeASTM B407
Welding Product


Incoloy 890 is supplied in the annealed condition. The tensile and yield strength values of alloy 890 at ambient and elevated temperatures are approximately the same as those of alloy 803 and slightly higher than values for alloy 800HT. Like alloy 803 it is strengthened by its content of chromium and carbon. However, alloy 890 is further strengthened, especially at very high temperatures, by molybdenum and niobium.


Incoloy 890 is mainly used for domestic and industrial sheathed heater applications and other high-temperature applications.