... :77B 82B Low relaxation high strength high quality steel wireSteel wire,spring steel wire,carbon steel wire,oil temper steel wire,cold heading wire , annealed wire,ungalvanized steel wiremiddle, high carbon Diam: 0.12mm ... Have good tensile strength and elongation,bending. Can make steel wire for making ropes accord DIN17223, JIS, BS, ASTMstandard. Low relaxation high strength high quality steel wire