1065 spring steel strip thickness: 0.05~45mm width:30~200mm surface:2B BA 6K 8K HL Specificationsmaterial:65 70 85 65Mn ... ,c75 Thickness: 0.15mm to 2.5mm Width: 8mm-300mm Surface: blue,yellow,bright,white,polished,nature,grey,black Hardness: 40 ...