1.1 本规范规定了通用和弹簧应用的C51000、C52100和C52400号UNS合金圆形和扁平（方形和矩形）磷铜线的要求。 1.1.1 这三种合金的矩形和方形导线的最大尺寸为0.188英寸。[5 毫米]厚，1.250英寸。[32毫米]宽。 1.1.2 由UNS C51000号铜合金制成的圆导线通常尺寸高达0.500英寸。直径[13 mm]。 1.2 单位- 以英寸-磅单位或国际单位制表示的数值应单独视为标准值。在文本中，国际单位显示在括号中。 每个系统中规定的值可能不是精确的等效值；因此，每个系统应相互独立使用。合并两个系统的值可能会导致不符合规范。 1.3 规范中规定了这些产品的附加要求 B250/B250米 ，请参阅第节 3. . 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 注1: 应当理解，本规范是通用的。由于产品用于许多应用，其中所用操作的要求过于特殊，无法通过任何普通机械试验进行规定，因此通常建议向制造商提交样品或图纸，并确保调整回火以适合产品预期的实际应用。 注2: 棒、棒和形状的产品按规格生产 B139/B139M . 1.5 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 round and flat (square and rectangular) phosphor bronze wire of UNS Alloy Nos. C51000, C52100, and C52400 for general and spring applications. 1.1.1 Rectangular and square wire of the three alloys are generally available in sizes up to a maximum of 0.188 in. [5 mm] thick and 1.250 in. [32 mm] wide. 1.1.2 Round wire from Copper Alloy UNS No. C51000 is generally available in sizes up to 0.500 in. [13 mm] in diameter. 1.2 Units— The values stated in either inch-pound units or in SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. 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 specification. 1.3 Additional requirements for these products are established in Specification B250/B250M , see Section 3 . 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Note 1: It is to be understood that this specification is general. Since the product is used for many applications where the requirements of the operations used are too particular to be specified by any of the ordinary mechanical tests, it is frequently advisable to submit samples or drawings to the manufacturer and secure an adjustment of temper to suit the actual application for which the product is intended. Note 2: Product in rod, bar and shape form is produced to Specification B139/B139M . 1.5 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.