1.flat wire spring 2.material: stainless steel wire and high TS steel wire 3.wire diameter:1.2mm to 2. ... and helix, it can be widely used for rolling various precision springs.8.Feture: Stainless steel wire has a good ductility, high ... tensile strength and last long in use, high flexibility, abrasion resistance and corrosion resistance, uniform diameter, smooth ...