Bronze 693 (C69300) is a lead-free brass alloy containing copper, zinc, silicon, and aluminum that machines similarly to free-cutting brass while offering improved corrosion resistance. Its composition of around 61.5% copper, 35.5% zinc, and 3% aluminum allows for good machinability through turning and threading operations. This round bar product is commonly used for automotive components, plumbing fixtures, valves, and other applications involving drinking water where lead content must be restricted and corrosion resistance is required.