Incoloy 925 Fasteners

Incoloy 925 Fasteners — Material Overview & Form Factors

Incoloy 925 is a high-performance alloy used wherever standard fasteners cannot meet the corrosion, temperature, or strength envelope. TorqBolt manufactures the full Incoloy 925 fastener range — bolts, nuts, screws, washers, studs, and custom forgings — under one ISO 9001:2015 quality system, with PED 2014/68/EU module-H qualification for pressure-equipment service.

Where Incoloy 925 Excels

Incoloy 925 is specified in oil & gas wellhead components, refinery heat exchangers, petrochemical reactors, power-generation turbines, marine offshore platforms, and pharmaceutical / food-grade processing. Its corrosion resistance, high-temperature strength, and weldability make it the default for service conditions outside the carbon and standard-stainless envelope.

Form Factors Available

Standards & Certification

Incoloy 925 fasteners are supplied with EN 10204 3.1 (mill cert) or 3.2 (third-party witnessed) material test reports as standard. Additional certification packages: NACE MR0175 / ISO 15156, NORSOK M-650, API 6A (wellhead), API 20E (subsea bolting), PED 2014/68/EU. Third-party inspection by TUV, Lloyd's, BV, DNV, SGS, and Intertek arrangeable on order.

Incoloy — Nickel-Iron-Chromium Alloys

Incoloy is the family of nickel-iron-chromium alloys positioned between stainless and Inconel. Combines high-temperature strength of nickel alloys with iron-substitution cost savings.

Incoloy 800 / 800H / 800HT are the most widely specified for furnace fixtures and steam-superheater bolting up to 1100°C. Incoloy 825 adds Mo + Cu for sulfuric and reducing-acid service. Incoloy 925 is age-hardenable for high-strength sour-service.

Incoloy fasteners ship per ASTM B408 (rod/bar) and B564 (forged) with EN 10204 3.1 / 3.2 certification including ASTM G28 intergranular corrosion testing.

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