AL TECH 440C is a martensitic stainless steel of high carbon and chromium content capable of full hardening response after oil quenching or air cooling. The outstanding wear resistance of 440C combined with its moderately good corrosion resistance make it an excellent candidate for bearings, bushings, valve components, cutlery and pump parts. Designers may also consider Type 440C vacuum are remelted (VAR) for aerospace and small precision bearings. In these applications improved cleanliness, superior fatigue properties, high strength and corrosion resistance are critical design considerations. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive strength as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-550. Producer or source: AL Tech Specialty Steel Corporation.