General Description

Incoloy 925 (UNS N09925) is an agehardenable nickel based alloy with additions of molybdenum, copper, titanium and aluminum. Alloy 925 offers corrosion resistance comparable with that of alloy 825, but with higher strength obtained by age hardening. The combination of nickel and chromium renders protection in both oxidizing and reducing atmospheres. The high nickel content also gives resistance to chloride ion stress-corrosion cracking. Pitting and crevice corrosion resistance is also excellent.

Chemical Composition

Grade Ni% Cr% Fe% Mo% Cu% Ti% Al% Mn% Si% Nb% C% S%
Incoloy 925 42.0-46.0 19.5-22.5 Min 22 2.5-3.5 1.5-3.0 1.9-2.4 0.1-0.5 Max 1.0 Max 0.5 Max 0.5 Max 0.03 Max 0.03


Grade UNS
Incoloy 925 N09925

Physical Properties

Grade Density Melting Point Electrical Resistivity
Incoloy 925 8.08 g/cm3 1311°C-1366 °C 1.17 μΩ m

Mechanical Properties

Incoloy 925 Tensile Strength Yield Strength (0.2%) Elongation Hardness (HRC)
Solution Treated 685 MPa 271 MPa 56% 76
Solution&Aging 1154 MPa 832 MPa 27% 32

Size Range

Incoloy 925 bar, forging ring, disc are available.

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