HOLLOW CONNECTOR OF ALUMINUM ALLOY EXTRUSION MATERIAL WHICH IS EXCELLENT IN EXTRUSION PROPERTY AND SACRIFICIAL ANODE PROPERTY

摘要

An aluminum alloy connector which is excellent in extrusion property and sacrificial anode property, the connector being extruded in a hollow shape from an aluminum alloy extrusion material consisting of 0.2 to 0.8% (hereinafter, “%” means “mass %”) of Si, 0.45 to 0.9% of Mg, 1.0 to 3.5% of Zn, 0.001 to 0.2% of Ti and the balance of Al plus unavoidable impurities. An electric potential of said aluminum alloy extrusion connector is lower than an electric potential of a pipe member made of an Al—Mg—Si series alloy or an Al—Mn series alloy which is to be swaged to the connector, by 100 mV or more.