1.1 本规范规定了由铜合金UNS编号C33500、C34000、C34500、C35000、C35300、C35330、C35350和C35600生产的铜锌铅合金（铅黄铜）棒、棒、线和型材的要求。这些合金的标称成分如所示 表1 . 1.1.1 本产品适用于冷成型操作（如挤锻、扩口、严重滚花或螺纹轧制）前需要广泛加工的应用。 注1: 提到 附录X1 更多应用信息。 1.1.2 通常，按照本规范制造的产品以直线长度提供。尺寸 1. / 2. 在里面[12 mm]及以下可按要求作为线圈或卷筒上的电线提供。 1.2 以国际单位制或英寸-磅单位表示的数值应单独视为标准值。每个系统中规定的值不一定是精确的等价物； 因此，为确保符合本标准，每个系统应独立使用，且两个系统的值不得组合。 注2: 参考规范 B16/B16M 和 B140/B140M 用于螺丝机应用的铜-锌-铅（铅黄铜）棒和棒。 1.3 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。

1.1 This specification establishes the requirements for copper-zinc-lead alloy (leaded-brass) rod, bar, wire, and shapes produced from Copper Alloys UNS Nos. C33500, C34000, C34500, C35000, C35300, C35330, C35350, and C35600. These alloys have nominal composition given in Table 1 . 1.1.1 This product is suitable for applications requiring extensive machining before such cold-forming operations as swaging, flaring, severe knurling, or thread rolling. Note 1: Refer to Appendix X1 for additional applications information. 1.1.2 Typically, product made to this specification is furnished as straight lengths. Sizes 1 / 2 in. [12 mm] and under may be furnished as wire in coils or on reels when requested. 1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. Note 2: Refer to Specifications B16/B16M and B140/B140M for copper-zinc-lead (leaded-brass) rod and bar for screw machine applications. 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.