Hastelloy X (UNS N06002/2.4665)

Hastelloy X (UNS N06002/2.4665) is a nickel-chromium-iron-molybdenum alloy with outstanding strength and oxidation resistance at temperatures to 1200°C. Matrix stiffening provided by the molybdenum content results in high strength in a solid-solution alloy having good fabrication characteristics. Used in gas turbines, industrial furnaces, heat-treating equipment and nuclear engineering.

Equivalent Grades

Hastelloy X
Inconel HX
Nicrofer 4722Co
Nimonic PE13
GH3536Hastelloy X
Inconel HX
N06002NiCr22Fe18Mo2.4665NC22FeDHR 6
HR 204

Chemical Composition, %

Hastelloy X0.05-0.15≤1.00≤1.00≤0.04≤0.0320.5-23.0Bal0.5-2.58.0-10.00.2-1.017.0-20.0

Typical Physical and Mechanical Properties (RT, Annealed)

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

Available Products and Specifications

Rod, Bar, Wire and ForgingsASTM B572, ASME SB572, DIN 17752/17753/17754, ISO 9723/9724/9725
Plate, Sheet and StripASTM B435, ASME SB435, DIN 17750, ISO 6208
Pipe and TubeASTM B619, ASTM B622, ASTM B626, ASTM B751, ASTM B775, ASME SB619, ASME SB622, ASME SB626, ASME SB751, ASME SB775, ISO 6207
Welding ProductAWS A5.14 ERNiCrMo-2, AMS 5798, ASME Ⅱ SFA-5.14 ERNiCrMo-2, ASME Ⅸ F-No.43, ISO SNi6002
OthersASTM B366, ASME SB366, DIN17744


  • Outstanding oxidation resistance through 1200°C
  • Resistant to carburization and nitriding
  • Excellent high temperature strength
  • Good resistance to chloride stress-corrosion cracking


  • Gas turbine operations
  • Petrochemical
  • Structural components
  • Retorts
  • Muffles
  • Catalyst support grids
  • Furnace baffles
  • Tubing for pyrolysis operations
  • Flash drier components