Brass fittings or aluminum bronze fittings, which cost more,

Bronze is more expensive because it has better properties and costs more to make. Aluminum bronze Copper base alloy with aluminum as the main alloying element is called aluminum bronze. Aluminum bronze has higher mechanical properties than brass and tin bronze. In practice, the aluminum content of aluminum bronze is 5% ~ 12%, and the aluminum bronze with 5% ~ 7% aluminum has the best plasticity and is suitable for cold processing. When the aluminum content is more than 7% ~ 8%, the strength increases, but the plasticity decreases sharply, so it is mostly used in the as-cast state or after hot processing. Aluminum bronze has higher wear resistance and corrosion resistance in atmosphere, seawater, seawater carbonic acid and most organic acids than brass and tin bronze. Aluminum bronze can manufacture gear, shaft sleeve, worm gear and other high strength wear resistance parts and high corrosion resistance elastic components

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