Project Description

Incoloy 925 (UNS N09925)

Incoloy 925 (UNS N09925) is a precipitation-hardenable nickel-iron-chromium alloy with additions of molybdenum and copper. It combines the high strength of a precipitaiton-hardenable alloy with the excellent corrosion resistance of Incoloy alloy 825.

Equivalent Grades

TrademarkGBGOSTASTMUNSDINW.Nr.NFBSJISSS
Incoloy 925––Incoloy 925N09925––––––

Chemical Composition, %

AlloyCSiMnPSCrNiMoAlTiCuFe
Incoloy 925≤0.03≤0.50≤1.00≤0.03≤0.0319.5-22.542.0-46.02.5-3.50.1-0.51.9-2.41.5-3.0Bal

Typical Physical and Mechanical Properties (RT, Solution annealed)

Density, g/cm3Melting Point, ℃Tensile Strength, MPaYield Strength, MPaELongation, %Hardness, HB
8.081311-1366121081024–

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

  • Protection in oxidizing and reducing atmosphere
  • Resistance to chloride ion stress-corrosion cracking
  • Excellent resistance to pitting and crevice corrosion

Applications

  • Valves, hangers, packers, and tubulars for sour gas production
  • Marine fasteners and pump shafts