1.1 本规范规定了通用和弹簧应用中UNS合金C51000、C52100和C52400的圆形和扁平（方形和矩形）磷青铜线的要求。 1.1.1 这三种合金的矩形和方形线材的最大尺寸为0.188英寸[5毫米]厚和1.250英寸[32毫米]宽。 1.1.2 UNS C51000号铜合金圆线的直径通常可达0.500英寸[13毫米]。 1.2 单位-- 以英寸-磅单位或国际单位制表示的值应单独视为标准值。在文本中，国际单位制显示在括号中。每个系统中所述的值可能不是完全等效的；因此，每个系统都应独立使用。结合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/b25000万 ，请参阅第节 3. . 1.4 本标准并不旨在解决与其使用相关的所有安全问题（如果有的话）。本标准的使用者有责任在使用前建立适当的安全、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。由于该产品用于许多应用，其中使用的操作要求过于特殊，无法通过任何普通机械测试来指定，因此通常建议向制造商提交样品或图纸，并确保调整温度以适应产品的实际应用。 注2: 棒、棒和形状的产品按照规格生产 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》中确立的国际公认的标准化原则制定的。

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.