ARMCO 18-3Mn is a low-nickel stainless steel having a high yield strength, low magnetic permeability in all conditions and good resistance to stress-corrosion cracking. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as fracture toughness. It also includes information on low and high temperature performance, and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-286. Producer or source: Armco Steel Corporation, Advanced Materials Division.