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

TrademarksGBJISKSASTMUNSDINW.NrGOSTBSNF
Incoloy 925Incoloy 925N099252.4858

Product Forms

Wire, Bar, Strip, Sheet, Plate, Tube, Pipe, Pipe Fittings, Forgings

Chemical Composition,%

CPSMnSiCrNiMoAlTiCuFe
≤0.03≤0.03≤0.03≤1.00≤0.5019.50~22.5042.00~46.002.50~3.500.10~0.501.90~2.401.50~3.00Bal

Typical Physical & Mechanical Properties (RT, Precipitation Hardened)

Density, g/cm3Melting Point, ℃Tensile Strength, MPaYield Strength, MPaElongation,%
8.081311-1366121081024

Specifications

Rod, Bar, Wire, ForgingsASTM B408/ASME SB408, ASTM B564/ASME SB564, ISO 9723/9724/9725
Plate, Sheet, StripASTM A240/A480/B409/B906/ASME SA240/SA480/SB409/SB906, ISO 6208
Pipe, TubeASTM B163/ASME SB163, ASTM B407/B829/ASME SB407/SB829, ASTM B514/B775/ASME SB514/SB775, ASTM B515/B751/ASME SB515/SB751, ISO 6207
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