Anti corrosion al mg mn alloy sheet for roof is a high-performance building envelope material, particularly outstanding in its weather resistance, lightweight construction, and design adaptability. Aluminum-magnesium-manganese alloy sheet is based on aluminum (approximately 90%-98.5%), with magnesium (0.8%-1.5%) and manganese (1.0%-1.5%) added to form a ternary alloy. Magnesium significantly enhances the material’s strength and toughness, achieving a tensile strength of 240-285 …