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Incoloy®Alloy 800 / H / HT

Incoloy 800,Incoloy 800H , and Incoloy 800HT are nickel-iron-chromium super alloys. When exposed to high-temperature these alloys not only provide excellent resistance to oxidation and carburization but also good strength too. These nickel steel alloys are similar except for the higher level of carbon in Incoloy 800H, and the addition of up to 1.20 percent titanium and aluminum in Incoloy 800HT.

Specifications

Standard Incoloy®Alloy 800 / H / HT
1 UNS N08800/10/11
2 Werkstoff Nr. 1.4876/4958/59

Chemical Composition

Incoloy 800 800H 800HT
Ni 30-35 30-35 30-35
Fe 19-23 19-23 19-23
Cu 0.75 max 0.75 max 0.75 max
Ti 0.15-0.60 0.15-0.60 0.15-0.60
Al 0.15-0.60 0.15-0.60 0.85-1.20
C 0.1 max 0.05-0.1 0.06-0.1
Mn 1.5 max 1.5 max 1.5 max
S 0.015 max 0.015 max 0.015 max
Si 1.0 max 1.0 max 1.0 max

Mechanical & Physical Properties

Density 7.94 g/cm3
Melting Point 1385 °C (2525 °F)
Tensile Strength Psi – 75,000 , MPa – 520
Yield Strength (0.2%Offset) Psi – 30,000 , MPa – 205
Elongation 30 %

Incoloy® is a registered trademark of the Special Metals Corporation group of companies