Composition: Cu<0.6, Si 9.0-10.0, Mg (max) 0.45-0.6, Zn (max) 0.4, Fe Fe 1.0, Mn (max) 0.35, Ni (max) 0.5, Sn (max) 0.15, Pb (max)/, Ti Ti (max) 0.30, Al residual