Aluminium alloy

摘要

An improved aluminium-silicon alloy for use in the manufacture of pistons is disclosed. The improved alloy is of the following composition in which the component elements are indicated in weight percent, Si = 10.5 - 13.5 Cu = 2.0 - 4.0 Ni = 0.5 - 2.0 Mg = 0.8 - 1.5 Ag = 0.2 - 0.6 Co = 0.2 - 0.6 P at least 20 ppm, and balance Al and unavoidable impurities. of