Abstract: A method for increasing the corrosion resistance of aluminum base alloys is disclosed. The alloys contain from 0.2 to 1.0% by weight zinc, up to 5.0% by weight magnesium, less than 0.1% by weight iron, balance aluminum. These aluminum base alloys are particularly useful as anode material for primary electric cells. The aluminum alloys reduce the incidence of hydrogen gas evolution within the cells. The aluminum base alloys may also be utilized as anode material for uses other than primary cells.

Abstract: A method for increasing the corrosion resistance of aluminum base alloys is disclosed. The alloys contain up to 2.0% by weight zinc, up to 5.0% by weight magnesium, less than 0.1% by weight iron, elements selected from the group consisting of cadmium, tin and lead, or any combination thereof, in amounts ranging from 0.05 to 0.3% by weight for each of cadmium and tin and from 0.01 to 0.15% by weight for lead, balance aluminum. These aluminum base alloys are particularly useful as anode material for primary electric cells. The aluminum alloys reduce the incidence of hydrogen gas evolution within the cells. The aluminum base alloys may also be utilized as anode material for uses other than primary cells.

Abstract: Brazed aluminum composite having improved resistance to intergranular corrosion. The core alloy consists essentially of from 1 to 1.5% manganese, from 0.1 to 0.4% chromium, from 0.1 to 0.4% copper, from 0.01 to 0.6% silicon, from 0.01 to 0.7% iron, balance essentially aluminum. The cladding brazing alloy consists essentially of from 4 to 14% silicon, from 0.05 to 0.2% bismuth and the balance essentially aluminum. The brazed alloy composite provides galvanic protection against intergranular corrosion.