轧制工业上应用的铜锌合金(或称黄铜)可分为二大类别:第一类铜锌合金适用于轧制铜片、铜丝、铜管之类,低温轧制或压制工业制品,这类合金主要包括63-37铜锌合金及7O-30铜锌合金,后者或称“弹皮铜”,适用于压制弹壳等。第二类铜锌合 Copper and zinc alloys (or brass) used in the rolling industry can be divided into two major categories: The first type of copper and zinc alloy is suitable for rolled copper, copper wire, brass and the like, low temperature rolling or pressing industrial products , Such alloys mainly include 63-37 copper and zinc alloy and 7O-30 copper and zinc alloy, the latter or “bomb leather copper”, suitable for pressing the shell and so on. The second category of copper and zinc