A wear-resistant aluminum alloy improved in wear resistance (or
viscosity), including: 0.1 to 0.39 wt % of Mg, 3.0 to 6.0 wt % of Si,
0.01 to 0.5 wt % of Cu, 0.01 to 0.5 wt % of Fe, 0.01 to 0.5 wt % of Mn,
0.01 to 0.5 wt % of Cr, and the remainder being Al and unavoidable
impurities; and an extruded product using the aluminum alloy.