New from Haynes International, HAYNES® 242® alloy is a unique, age-hardenable Ni-Mo-Cr alloy that combines excellent resistance to high-temperature fluorine-bearing environments with outstanding strength. It is ideally suited for use in processes involving exposure to gaseous fluorine & HF, or molten fluoride salts, particularly where high strength up to 1300°F (705°C) is required. Areas of potential application include fluoro-polymer and fluoro-elastomer production, nuclear fuel processing, mineral and metals production, and hydrofluoric acid production/processing, among others. 242® alloy is available in a full range of forms in the as-solution-annealed condition, and is normally age-hardened before being placed in service. It may also be cold-worked and age-hardened to achieve exceptionally high strength levels while maintaining good ductility.
Oxidation Resistance - Excellent to 1400°F (760°C)
Gaseous Fluorine & HF - Excellent to 1650°F (900°C)
Molten Chloride/Fluoride Salts - Excellent to 1650°F (900°C)
Chloride Stress Cracking Resistance - Excellent
Chlorination - Excellent in Reducing Environments
Hydrogen Embrittlement Resistance - Fair to Good