
Incoloy 925 (UNS N09925) is an age-hardenable nickel-iron-chromium superalloy. It combines the high corrosion resistance of standard Incoloy 825 with the added structural benefits of precipitation hardening.
By introducing specific quantities of titanium and aluminum, a controlled heat treatment triggers the formation of microscopic gamma-prime ($\gamma'$) phases. This internal structure increases the material's yield strength up to three times that of basic annealed alternatives.
Chemical Matrix: 42.046.0% Nickel (Ni), 19.522.5% Chromium (Cr), minimum 22.0% Iron (Fe) balance, with additions of Molybdenum (Mo) (2.53.5%), Copper (Cu) (1.53.0%), Titanium (Ti) (1.92.4%), and Aluminum (Al) (0.10.5%).
Mechanical Integrity: Yield strength levels can clear $\ge$724 MPa (105 ksi) after aging treatments, maintaining a typical maximum hardness boundary of 38 HRC to meet strict NACE MR0175 / ISO 15156 compliance guidelines for sour gas environments.
Corrosion Defenses: High nickel content acts as a safeguard against chloride-ion stress corrosion cracking (SCC), while molybdenum and copper components reliably counteract pitting and localized crevice degradation in reducing chemical processes.
Industrial vendors provide these bar stocks in both raw hot-rolled forms and precision cold-drawn finishes depending on processing requirements:
For heavy machining or baseline construction setups, raw mill finishes offer bulk strength advantages. Consider options like the Inconel 925 Round Bar Density: 8.14 G/M3, which comes hot-rolled in sizes ranging from 6.35mm to 300mm to accommodate heavy-duty component forging.
For finer tolerances or direct component machining, a cold-drawn and surface-treated finish is often preferred. The standard Inconel 925 Round Bars choice delivers smooth, scale-free bright or polished profiles optimized for precision tool joints, valves, or downhole petroleum fasteners.
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