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Materials / Inconel 718

Inconel 718High strength

A precipitation-hardened nickel alloy for demanding loaded assemblies and elevated-temperature service.

Material specification overviewCompare Materials

Material positioning

Inconel 718 Fasteners

A high-strength nickel-chromium alloy selected where mechanical performance, controlled heat treatment and verification of the final material condition are central to the order.

Positioning
High-load thermal service
Available forms
Bolts, studs, nuts, machined parts and round bar
Documentation
Heat treatment, mechanical testing and traceability
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Engineering reference

Performance and service profile

Representative information for preliminary review. Final values depend on product form, dimensions, heat treatment and governing specification.

Typical tensile strengthTypically 1,275 MPa or greater in common aged bar specifications
Typical yield strengthTypically 1,035 MPa or greater in common aged bar specifications
Reference conditionSolution treated and precipitation hardened
Temperature capabilityRetains high mechanical strength in elevated-temperature service; commonly evaluated around applications up to approximately 700 C.
Corrosion characteristicsGood general corrosion and oxidation resistance, selected primarily where high strength and thermal stability are required together.
Typical heat treatmentSolution treatment followed by controlled two-step age hardening

Typical applications

  • Gas turbines
  • Elevated-temperature bolting
  • Power generation
  • High-load industrial fasteners

Standards support

  • ASTM B637
  • AMS 5662 / 5663 where applicable
  • Project-specific fastener specifications

Documentation support

  • MTC / MTR
  • Heat-treatment records
  • Mechanical test report
  • Hardness verification
  • Full heat and lot traceability