C94700 is a nickel-tin bronze cast copper alloy renowned for its exceptional mechanical and corrosion-resistant properties. Its nominal composition (by weight) includes 86.0–89.0% Cu, 4.7–6.0% Sn, 4.5–6.0% Ni, 1.3–2.5% Zn, with trace elements such as Pb (≤0.08%), Fe (≤0.20%), and others tightly controlled . This alloy exhibits high hardness (typical tensile strength: 172–220 MPa in as-cast condition, up to 517 MPa after age-hardening), excellent wear resistance, and good thermal/electrical conductivity, making it ideal for high-stress components like bearings, gears, valve parts, and pump components