The copper rod is a solid rod-like object made of an alloy of copper and zinc. It is named after its yellow color. Brass has good mechanical properties and wear resistance, and can be used to manufacture precision instruments, parts of ships, and shells of guns. The zinc content is different, there will be different colors, such as 18%-20% zinc content will be reddish yellow, and zinc content of 20%-30% will be brownish yellow.

Comparison table of Chinese and foreign implementation standards for copper rods:

China: GB/T 4423-2007

American Standard: ASTM B 249-04

German standard: DIN EN 13347-2003

Japanese standard: JIS C2800