Nickel Inconel 718 AMS 5662

AMS 5662 is the aerospace material specification for Inconel 718 (UNS N07718) bar, forging and ring supplied in the solution and precipitation (age) heat-treated condition. Inconel 718 is an age-hardenable nickel-chromium superalloy known for an exceptional strength-to-weight ratio and excellent corrosion and oxidation resistance, holding its strength from cryogenic temperatures up to about 1300°F (704°C).

AMS 5662 is the workhorse specification of the Inconel 718 bar family, the most widely stocked and specified condition for machined and forged components. Supplied fully age-hardened, it develops a minimum ultimate tensile strength of 185 ksi (1275 MPa) and a minimum 0.2% yield strength of 150 ksi (1034 MPa), making it the default choice wherever a general-purpose, high-strength 718 bar or forging is required: shafts, fittings, valve bodies, fasteners, rings and structural machined parts.

Inconel 718 welds readily and is notably resistant to post-weld strain-age cracking, and it’s typically machined before final aging. The alloy has a density of 0.297 lb/in³ (≈ 8.19 g/cm³) in the aged condition, useful for calculating bar and forging weights.

Where the application demands guaranteed stress-rupture performance, the requirement is covered by AMS 5663; for improved rupture ductility in heavy sections via a higher-temperature solution treatment, see AMS 5664.

Tech Steel & Materials stocks and supplies AMS 5662 bar, forging and ring to aerospace and defense tolerances, request a quote for certified material cut to your size and quantity.