METAL-COATED STEEL STRIP

摘要

A steel strip having a coating of a metal alloy on at least one surface of the strip is disclosed. The metal alloy contains aluminium, zinc, silicon, and magnesium as the major elements. The metal alloy also contains strontium and/or calcium and unavoidable impurities and optionally other elements that are present as deliberate alloying elements. The concentration of magnesium is at least 1 wt.% and the concentration of (i) strontium or (ii) calcium or (iii) strontium and calcium is greater than 50 ppm.