C93700 is a leaded tin bronze alloy primarily composed of 78-82% Cu, 8.5-11.5% Sn, and 7.5-9.5% Pb, with trace elements like Sb, Si, and Mn . Known for its high lead content, it exhibits excellent self-lubricating properties, wear resistance, corrosion resistance, and machinability. Its mechanical properties include a tensile strength of 295 MPa and elongation of 25%, making it ideal for high-stress friction components such as bearings, bushings, pump impellers, and cylinder liners in aerospace, automotive, and industrial applications .