Brass: Brass (黄铜)
A copper-zinc alloy used for stamped metal zipper teeth. Brass offers high strength, good formability and excellent plating adhesion, and it accepts a range of decorative finishes. Zinc content affects colour, hardness and corrosion behaviour, so the alloy grade is specified. Brass teeth are stamped, polished and plated, and they are checked for burrs, dimensional accuracy and corrosion resistance after plating.