Project Description

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

TrademarkGBGOSTASTMUNSDINW.Nr.NFBSJISSS
Incoloy 800NS1101
NS111		–Incoloy 800N08800X10NiCrAlTi32-201.4876–NA15NCF 800
NCF 2B		–

Chemical Composition, %

AlloyCSiMnPSCrNiAl+TiTiCuFe
Incoloy 800≤0.10≤1.00≤1.50≤0.03≤0.0219.0-23.030.0-35.00.15-0.600.15-0.60≤0.75Bal

Typical Physical and Mechanical Properties (RT, Solution annealed)

Density, g/cm3Melting Point, ℃Tensile Strength, MPaYield Strength, MPaELongation, %Hardness, HB
8.001357-137560027545–

Available Products and Specifications

Rod, Bar, Wire and ForgingsASTM B408/ASME SB408, ASTM B564/ASME SB564, ISO 9723/9724/9725
Plate, Sheet and StripASTM A240/A480/B409/B906/ASME SA240/SA480/SB409/SB906, ISO 6208
Pipe and TubeASTM 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–
OthersASTM 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