Inconel 718 Fasteners

Inconel 718 Fasteners, Material Overview & Form Factors

Inconel 718 is a high-performance alloy used wherever standard fasteners cannot meet the corrosion, temperature, or strength envelope. TorqBolt manufactures the full Inconel 718 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 Inconel 718 Excels

Inconel 718 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

Inconel 718 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.

Inconel, Nickel-Chromium Superalloys

Inconel alloys are nickel-chromium-based superalloys engineered for service where standard stainless steels cannot survive. The Inconel family combines high-temperature strength (700-1100°C depending on grade) with outstanding oxidation and chloride-pitting resistance.

Inconel 718 is age-hardenable Ni-Cr-Fe-Mo-Nb strengthened by γ' and γ'' precipitates after solution + double-age treatment per AMS 5662. Inconel 625 is solid-solution strengthened by Mo+Nb. Inconel X-750 uses Ti+Al precipitation hardening for spring + bolt applications. Inconel 600 / 601 are general-purpose grades for furnace and heat-exchanger fasteners.

Specifications: ASTM B637 (forged bar), AMS 5662/5663 (rod/bar), ASTM B446 (625 bar). NACE MR0175 / ISO 15156 sour-service envelopes available on most grades. PREN values typically exceed 50 across the Inconel range.

Request a Quote for Inconel 718 Fasteners

Get a quotation, lead time, and certification details. Reply within 24 hours, Monday-Saturday.

Or email enquiry@torqbolt.com directly · Call +91-22-6615-7017. We never share your details.