15-15LC MODIFIED STAINLESS is an austenitic alloy with high manganese and nitrogen, with low permeability, and good corrosion resistance. The alloy should be considered in down-hole applications such as drill collars. 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 heat treating, machining, and joining. Filing Code: SS-588. Producer or source: Carpenter.