Stainless steel/spring steel/music wire compression spring SpecificationThe wire diameter from 0.1~10mmMaterialTitanium, Carbon steel, Silver, Nylon, Cr5, Iron, Nickel plated carbon line, Nickel plated steel wire harp, Flat wire, Square wire, SUS304/316/302 etc. Surface TreatmentZn-plating, Ni-plating, Cr-plating, Tin-plating, copper-plating,..