1.1 This specification covers 55 % aluminum-zinc alloy-coated steel sheet in coils and cut lengths.1.2 This product is intended for applications requiring corrosion resistance or heat resistance, or both.1.3 The product is produced in a number of designations, types, and grades which are designed to be compatible with differing application requirements.1.4 Product furnished under this specification shall conform to the applicable requirements of the latest issue of Specif