CTX-909 is a high-strength, precipitation hardenable superalloy which exhibits a low and relatively constant coefficient of thermal expansion over a broad temperature range, high hot hardness and good thermal fatigue resistance. It offers a significant improvement over alloys CTX-1 and CTX-3 due to its excellent combination of tensile properties and stress rupture strength to 1200°F (649°C) in the recrystallized condition combined with the use of common age hardening treatments. CTX-909 alloy is weldable, brazable, and can be chromium plated, but requires a protective coating if exposed to atmospheric conditions above 1000°F (538°C).
