Incoloy 800&800H&800HT

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. These nickel 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.

Chemical Composition (%)

Grade Ni Cr Fe C Al Ti Al+Ti
Incoloy 800 30.0~35.0 19.0~23.0 balance 0.10 Max 0.15~0.60 0.15~0.60 0.3~1.2
Incoloy 800 H 30.0~35.0 19.0~23.0 balance 0.05~0.1 0.15~0.60 0.15~0.60 0.3~1.2
Incoloy 800 HT 30.0~35.0 19.0~23.0 balance 0.05~0.1 0.25~0.60 0.25~0.60 0.85~1.2

Mechanical Properties

Grade Yield Strength
0.2% Offset
Tensile Strength Elongation
in 2 inches
KSI MPa KSI MPa %
Incoloy 800 30 Min 205 Min 75 Min 520 Min 30 Min
Incoloy 800H 26 Min 180 Min 65 Min 450 Min 35 Min
Incoloy 800HT 31 Min 210 Min 72.5 Min 500 Min 35 Min

Quken offers Incoloy 800 / 800H / 800HT products in following forms:

Incoloy 800 Products Standard Size Available (mm)
Incoloy 800 Sheets ASME SB409 0.5~2*2~350*C
Incoloy 800 Plates ASME SB409 2~25*1000~1500*2000~6000
Incoloy 800 Flanges ASME SB366 Customized
Incoloy 800 Seamless Pipes/Tubes ASME SB407 φ5~219*0.5~8.18*9000 Max
Incoloy 800 Welded Pipes/Tubes ASME SB154 φ10~630*1~16*13000 Max
Incoloy 800 Bars ASME SB408 φ3~200*100~6000 
Incoloy 800 Wire ASME SB408 φ0.01~3*C
Incoloy 800 Pipe Fittings ASME SB366 Customized
Incoloy 800 Forgings ASME SB564 Customized
Incoloy 800H Products Standard Size Available (mm)
Incoloy 800H Sheets ASME SB409 0.5~2*2~350*C
Incoloy 800H Plates ASME SB409 2~25*1000~1500*2000~6000
Incoloy 800H Flanges ASME SB366 Customized
Incoloy 800H Seamless Pipes/Tubes ASME SB407 φ5~219*0.5~8.18*9000 Max
Incoloy 800H Welded Pipes/Tubes ASME SB154 φ10~630*1~16*13000 Max
Incoloy 800H Bars ASME SB408 φ3~200*100~6000 
Incoloy 800H Wire ASME SB408 φ0.01~3*C
Incoloy 800H Pipe Fittings ASME SB366 Customized
Incoloy 800H Forgings ASME SB564 Customized
Incoloy 800HT Products Standard Size Available (mm)
Incoloy 800HT Sheets ASME SB409 0.5~2*2~350*C
Incoloy 800HT Plates ASME SB409 2~25*1000~1500*2000~6000
Incoloy 800HT Flanges ASME SB366 Customized
Incoloy 800HT Seamless Pipes/Tubes ASME SB407 φ5~219*0.5~8.18*9000 Max
Incoloy 800HT Welded Pipes/Tubes ASME SB154 φ10~630*1~16*13000 Max
Incoloy 800HT Bars ASME SB408 φ3~200*100~6000 
Incoloy 800HT Wire ASME SB408 φ0.01~3*C
Incoloy 800HT Pipe Fittings ASME SB366 Customized
Incoloy 800HT Forgings ASME SB564 Customized