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COLORBOND® Coolmax® steel (CMX) is BlueScope’s roofing material designed to provide and maintain high solar reflectance. COLORBOND® Coolmax® steel, available exclusively in the colour Whitehaven®, is specifically designed to provide low solar absorptance to help reduce roofing temperatures. Typical COLORBOND® Coolmax® steel applications are for commercial and industrial roofing. This EPD sets out information on the average COLORBOND® Coolmax® steel (CMX) product14 manufactured by BlueScope in Australia, in the base metal thicknesses (BMTs) presented in the table below. The product range represented by this EPD only includes COLORBOND® Coolmax® steel (CMX) with a hot dipped aluminium, zinc, and magnesium alloy (AM100) coating, in the colour Whitehaven®. It excludes all other COLORBOND® steel products, such as COLORBOND® steel for roofing and walling (XRW), COLORBOND® steel for garage doors, fencing, patios and pergolas and insulated panels, COLORBOND® steel Metallic, COLORBOND® Ultra steel and COLORBOND® Intramax® steel. This EPD also excludes removable films that may be applied to COLORBOND® Coolmax® steel at the paint line for protection during transport and installation. The COLORBOND® Coolmax® steel products represented in this EPD consist of a low carbon15 steel substrate that is coated with a metallic coating incorporating BlueScope’s Activate® technology (hot dipped aluminium, zinc, and magnesium alloy AM100 coating) to provide enhanced corrosion resistance, and then further protected and enhanced with a specially developed, exterior-grade, oven-baked paint system designed specifically for high solar reflectance. The metallic coated base steel (G300S or G550S strength grade), conforms to AS 1397:2021 Continuous hot-dip metallic coated steel sheet and strip - Coatings of zinc and zinc alloyed with aluminium and magnesium. The paint system meets the performance requirements of AS/NZS 2728:2013 Prefinished/pre painted sheet metal products for interior/exterior building applications - Performance requirements.