Knowledge BaseCW724R — CuZn21Si3P Lead-Free Silicon Brass Datasheet
CW724R ECO-BRASS DATASHEET
★ Lead-Free Drinking Water Silicon Alloy

CW724R — CuZn21Si3P Lead-Free Silicon Brass Datasheet

CuZn21Si3P (CW724R / C69300 Eco-Brass) technical material datasheet. Lead-free silicon brass (Pb ≤ 0.09%) for California Prop 65, NSF/ANSI 61, and WRAS drinking water applications.

1. Technical Alloy Overview & Metallurgical Profile

This datasheet details chemical composition spectro limits, mechanical tensile properties, physical thermal constants, and fabrication ratings according to European EN and American ASTM standards.

2. Spectro Chemical Composition Limits (%)

ElementMin %Max %Standard Specification
Copper (Cu)57.0%63.0%EN 12164 / ASTM B16
Lead (Pb)1.6%3.5%RoHS 3 Exemption 6(c) Authorized
Zinc (Zn)BalanceOptical Emission Spectro Tested

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