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Inconel 625 Fasteners Unmatched Corrosion Resistance & High-Temperature Strength

When your applications demand exceptional performance in extreme environments, Inconel 625 fasteners are the premier choice. Engineered for superior resistance to pitting, crevice corrosion, and oxidation, these fasteners excel in aerospace, marine, chemical processing, and oil & gas industries. We are pleased to offer a comprehensive range of high-quality Inconel 625 fasteners for sale, including bolts, nuts, screws, and studs, manufactured to meet strict international standards.


Understanding Inconel 625: Composition & Properties

The outstanding performance of Inconel 625 stems from its unique alloying recipe and resultant properties.

  • Inconel 625 Chemical Composition: The alloy derives its strength from a solid solution nickel-chromium matrix, with significant additions of Molybdenum (8-10%) and Columbium (Niobium) (3.15-4.15%). This combination, along with iron, titanium, and aluminum, creates a material exceptionally resistant to a wide range of corrosive media.

  • Inconel 625 Material Properties:

    • Excellent resistance to chloride-ion stress-corrosion cracking.

    • High fatigue strength and tensile strength from cryogenic to elevated temperatures (up to ~1000°C / 1800°F).

    • Outstanding oxidation resistance and weldability without post-weld heat treatment.


Material Equivalency & Global Standards

For specification and cross-referencing, it is useful to know the Inconel 625 equivalent material grades across different standards:

  • UNS N06625

  • ASTM B446 / ASME SB446

  • EN 2.4856 / NiCr22Mo9Nb

  • ISO NW6625


Similarly, when sourcing, engineers often search for Inconel 625 fasteners equivalent to ensure they meet the required dimensional (e.g., ASME, DIN, ISO) and material standards for their global projects.


Inconel 625 Fasteners Price & Value

The Inconel 625 fasteners price reflects the high cost of raw materials and the specialized processing required. While they represent a premium investment, their long service life, reduced maintenance costs, and reliability in preventing catastrophic failure offer unparalleled lifetime value and operational safety. Prices vary based on fastener type, size, quantity, and certification requirements.


Comprehensive Comparison: Inconel 625 vs. Other Inconel Fastener Grades

Feature / GradeInconel 625 (UNS N06625)Inconel 600 (UNS N06600)Inconel 718 (UNS N07718)Inconel X-750 (UNS N07750)Inconel 825 (UNS N08825)
Primary StrengtheningSolid solution (Mo, Nb)Solid solution (Cr)Precipitation hardening (γ' and γ'')Precipitation hardening (γ')Solid solution (Ni, Cr, Mo, Cu)
Key StrengthCorrosion resistance, especially to pitting/crevice. Good strength.Resistance to caustics & high-temperature oxidation.Exceptional high tensile & creep strength up to ~700°C.High strength & creep resistance at temps up to ~815°C.Excellent resistance to sulfuric & phosphoric acid, and stress corrosion.
Max Service Temp (Approx.)1000°C (1800°F) for oxidation1150°C (2100°F) for oxidation700°C (1300°F) for strength815°C (1500°F) for strength540°C (1000°F) for corrosion
Corrosion FocusSea water, chlorides, oxidizing acids.Caustic alkalis, high-purity water. Chloride SCC resistance is lower than 625.Good general corrosion resistance, but not the primary selector.Good oxidation resistance.Reducing acids (sulfuric, phosphoric), sulfuric acid contaminants.
Typical Fastener ApplicationOffshore platforms, marine, flue gas desulfurization systems.Furnace components, chemical processing (caustic).Jet engines, gas turbine components, high-temp bolting.Gas turbine engines, nuclear reactors, high-temp springs.Chemical processing, pickling tanks, sour gas wells.
Machinability / FabricationFair to difficult. Requires controlled parameters.Good for a superalloy.More difficult due to high strength.Difficult in aged condition.Fair, similar to austenitic stainless steels.
Cost DriverHigh Ni, Mo, Nb content.Lower than 625/718.High processing (aging) & alloy cost.High processing (aging) cost.Generally lower than 625/718.


Why Choose Our Inconel 625 Fasteners?


We provide certified, traceable Inconel 625 fasteners for sale, backed by technical expertise. Our inventory is designed to meet urgent project needs while our sourcing network ensures competitive Inconel 625 fasteners price without compromising on quality.

Contact us today for a quote or technical consultation to select the optimal Inconel fastener grade for your specific environment and mechanical requirements.


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