CZ135

CZ135 (governed by British Standards BS 2874 for rods and sections, BS 2872 for forging stock, and unified across Europe as EN 12164 / EN 12165 CW713R) is a specialized, multi-phase high-tensile brass engineered specifically for sliding wear resistance, high structural yield strength, and friction applications. Metallurgically structured around a complex duplex matrix, CZ135 is formulated with 57.0% to 60.0% Copper and fortified by a synergistic combination of Manganese (1.5% - 3.5%), Aluminum (1.0% - 2.0%), and Silicon (0.3% - 1.3%), with a controlled lead content (≤ 0.80%). The interaction between manganese and silicon forms hard, microscopic manganese silicide (Mn₅Si₃) intermetallic precipitates dispersed uniformly throughout the structure. This microstructural network provides hardness and abrasion resistance comparable to aluminum bronze, while preserving superior hot forgeability and machinability