Critical Role of Heat Treatment
Heat treatment is not optional for superalloy components—it is essential for achieving the mechanical properties that justify using these premium materials. Precipitation-hardened alloys like Inconel 718, Waspaloy, and X-750 derive their strength from precisely sized and distributed strengthening phases (gamma-prime and gamma-double-prime) that form only during carefully controlled aging cycles. Solid-solution alloys like Inconel 625 and Hastelloy X require solution annealing to dissolve deleterious phases and optimize corrosion resistance. Incorrect heat treatment can result in components that meet dimensional specifications but fail to meet mechanical property or corrosion resistance requirements.
Our Heat Treatment Capabilities
CastAlloy performs superalloy heat treatment in calibrated furnaces with continuous temperature recording and temperature uniformity surveys per AMS 2750. Our capabilities include solution treatment (1,700–2,150°F depending on alloy), single and double aging cycles, stress relief annealing, vacuum and inert atmosphere processing for titanium and reactive alloys, and rapid cooling (water quench, oil quench, forced gas) for alloys requiring specific cooling rates. Each heat treatment cycle is documented with furnace charts, thermocouple records, and post-treatment mechanical property verification.
Specifications We Support
We perform heat treatment per AMS 5663 (Inconel 718), AMS 5666 (Inconel 625), AMS 5544 (Waspaloy), AMS 5754 (Hastelloy X), AMS 4928/4935 (Ti-6Al-4V), and numerous customer-specific heat treatment requirements. Hardness, tensile, and impact testing verify that each heat treatment lot meets specified requirements. Contact us for heat treatment services.