ASTM A792 Az150 galvalume steel coil

GALVALUME steel is a 55% Al- 45%Zn coated steel product that is ideally suited for most types of roofing and siding applications. Other industries include unexposed automotive parts, appliances and miscellaneous applications like furniture, outdoor cabinetry, computer cases, gutters, pipe, etc. Even in the most aggressive acid rain environments, the 55 % Al-Zn coating continues to provide protection long after the corrosion protection of ordinary zinc coatings has been exhausted. This means that the 55% Al-Zn coating will provide a minimum of twice the expected life as hot-dip galvanized coatings of the same coating thickness. Based on 30-year atmospheric test results, it is estimated that Galvalume sheet will outlast G90 galvanized by two to four times in marine, industrial and rural atmospheres. When compared to aluminum coated sheet steel, Galvalume sheet has superior corrosion resistance at sheared edges.