Oil Tempered Spring Steel Wire 1.Size:0.5-16mm 2.Material:60#,65#, ... ,77B,77A,82B,60Si2Mn,55SiCr,50CrVa 3.Used:spring Oil Tempered Spring Steel Wire 1. Size:0.5-16mm 2. Material: 77B ... steel wire, medium carbon steel wire, high carbon steel wire, bicycle spoke steel wire, motorcycle spoke steel wire, umbrella frame steel wire, spring steel wire, mattress spring steel ...