The chemical composition of UNS N19903(Incoloy 903)
Tech Center 2025-08-02 1
Incoloy 903 alloy is an age-hardening nickel-iron alloy, whose outstanding properties are a constant low coefficient of thermal expansion, a constant elastic modulus and high strength.
The properties of this alloy make it an excellent candidate material for applications such as rocket engine thrust chambers, steam turbine bolts, springs, gauge blocks and ordnance hardware.
The density of this alloy is ρ=8.25g/cm³.
