1.1 This specification establishes the requirements for brass plate, sheet, strip, and rolled bar of the following alloys:2 Copper Alloy UNS No. Previous Trade Name Nominal Composition Copper, % Zinc, % C21000 Gilding, 95 % 95 5 C22000 Commerical Bronze, 90 % 90 10 C22600 Jewerly Bronze, 871/2 % 87.5 12.5 C23000 Red Brass, 85 % 85 15 C24000 Low Brass, 80 % 80 20 C26000 Cartridge Brass, 70 % 70 30 C26800 Yellow Brass, 66 % 66 34 C27200 … 63 37 C28000 Muntz Metal, 60 % 60 40 1.2 Units-The values stated in either inch-pound units or SI units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.