POSCO Holdings Inc.
ALLOY-COATED STEEL SHEET AND MANUFACTURING METHOD THEREFOR

Abstract:

Provided are an alloy coating steel plate and a method of manufacturing the same, and in this case, the alloy coating steel plate includes a steel, and an Al--Mg--Si alloy layer positioned on the steel plate, wherein the Al--Mg--Si alloy layer is formed to include Mg--Si alloy grains in an alloy layer configured in an Al--Mg alloy phase.