Importance

Loading Importance Indicators...

Abstract

An aluminum alloy extruded material for automotive structural members, which contains 2.6 to 5 wt % of Si, 0.15 to 0.3 wt % of Mg, 0.3 to 2 wt % of Cu, 0.05 to 1 wt % of Mn, 0.2 to 1.5 wt % of Fe, 0.2 to 2.5 wt % of Zn, 0.005 to 0.1 wt % of Cr, and 0.005 to 0.05 wt % of Ti, and satisfies relationship of the following expression (I), (Content of Mn (wt %))+0.32.times.(content of Fe (wt %))+0.097.times.(content of Si (wt %))+3.5.times.(content of Cr (wt %))+2.9.times.(content of Ti (wt %)).ltoreq.1.36 (I) with the balance being made of aluminum and unavoidable impurities. A method of producing the aluminum alloy extruded material for automotive structural members, which comprises cooling with a refrigerant from outside of a die-exit side, at the time of extrusion.

Loading the Abstract Image...

First Claim