... Strip 1.Material: 65, 70, 75, 85, 65Mn, etc 2.Thickness:0.15mm-2.0mm 3.Width:30mm-355mm Specification of Spring Steel ... : 65, 70, 75, 85, 65Mn, 55SiMnV, 60Si2MnA, 60Si2CrA, etc.2.Thickness:0.15mm-2.0mm3.Width:30mm-355mm4.Hardness:≥100HV5.Surface Treatment: grey ... .000.60-0.90≤0.35 ≤0.03≤0.0355CrMnA0.52-0.600.17-0.370.65-0.950.65-0.95 ≤0.03≤0.0360CrMnA0.56-0.640.17-0.370 ...