AISI Type 308 is an austenitic chromium nickel steel with corrosion and heat resistance superior to Type 304. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness and fatigue. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-140. Producer or source: Alloy steel mills and foundries.