This invention discloses a high-strength, high-
conductivity beryllium copper alloy rod for limit switches and its manufacturing method, belonging to the field of
electronic component manufacturing technology. Its
chemical composition, by weight percentage, includes: Be: 0.10%–0.30%, Co: 0.10%–0.30%, Ni: 0.30%–0.50%, Si: 0.020%–0.040%, Mn: 0.05%–0.10%, Zr: 0.05%–0.10%, Ag: 1.00%–1.20%, RE: 0.0140%–0.0180%, Ag-SiC: 0.80%–1.20%, Cu-CNTs: 0.40%–0.80%, Pb ≤ 0.005%, Sn ≤ 0.005%, other
impurity elements ≤ 0.01%, and the balance being Cu. The manufacturing method includes
electroless plating of SiC and CNTs with Ag and Cu, respectively, followed by gas atomization powdering, mixing, vacuum
hot pressing sintering, hot
extrusion, cold drawing, and aging treatment to obtain rods. This invention achieves simultaneous improvement in strength and
conductivity through the synergistic effect of low Be and
metal cladding reinforcement. The finished product has a yield strength >1050MPa, tensile strength >1200MPa, elongation >4%, and
conductivity >40% IACS.