319 aluminum alloy contains 85.8 - 91.5 % of aluminum, 5.5 - 6.5 % of silicon, 3 - 4 % of copper, 0.35% of nickel, 0.25% of titanium, 0.5% of manganese, 1% of iron, 0.1% of magnesium, and 1% of zinc. This alloy has good casting features, corrosion resistance, and good thermal conductivity.