Mild Steel Colour Coated Steel: Technical Specification Of Galvanised Colour Coated Steel : Base Metal : High Tensile Steel Coating Mass : 120 GSM Coated Std : IS :277/JIS:3302 Yeild Strength : 240 Mps / 550 Mps Thickness : 0.40 to 1.00 MM Tolerance : +0.03 as per IS : 513