Aluminum alloy for non-heat-treated structural material and method for manufacturing the extruded material

摘要

The present invention relates to a steel sheet comprising, by weight, 0.5 to 1.0% of Mg, 0.6 to 1.2% of Si, 0.8 to 2.1% of Mn, 0.1 to 0.3% of Zr, 0.3 to 0.8% of Cu, 0.1-0.5% of Cr, 0.11% or less of Ti, and the balance of Al.