INCONEL X is a high-strength, high-temperature nickel-base alloy responding to age hardening for maximum properties. It is highly resistant to chemical corrosion and oxidation. Its creep rate is low under high stresses at 1200-1500 F. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness, creep, and fatigue. It also includes information on high temperature performance as well as heat treating, machining, joining, and surface treatment. Filing Code: Ni-3. Producer or source: International Nickel Company Inc..