1.1 本规范规定了电子设备中用作传输线的无缝铜和铜合金矩形管的要求。规定了五种具有以下标称成分的材料: 2. 铜或 铜合金 UNS公司 2. 不 先前 使用的名称 标称成分，% 铜 锌 磷 C10100 铜，OFE型 A. 99.99 B . . C10200 铜，类型 A. 99.95 B . . C10300 铜，XLP型 A. 99.95 B . 0.003 C12000 铜，DLP型 A. 99.90 B . 0.008 C22000 贸易的 铜牌，90 % 90 10 . 1.2 单位- 以英寸-磅为单位的数值应视为标准值。括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 1.3 以下安全危险警告仅适用于本规范中所述的试验方法。 1.3.1 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。 1.4 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。 ====意义和用途====== 15.1 为了确定是否符合化学成分、硬度和电阻率要求的规定限值，应按照实践中的舍入方法对观察值或计算值进行舍入 E29年 .

1.1 This specification establishes the requirements for seamless copper and copper-alloy rectangular tube intended for use as transmission lines in electronic equipment. Five types of material are specified having the following nominal compositions: 2 Copper or Copper Alloy UNS 2 No. Previously Used Designation Nominal Composition, % Copper Zinc Phosphorus C10100 Copper, Type OFE A 99.99 B . . C10200 Copper, Type OF A 99.95 B . . C10300 Copper, Type OFXLP A 99.95 B . 0.003 C12000 Copper, Type DLP A 99.90 B . 0.008 C22000 Commercial bronze, 90 % 90 10 . 1.2 Units— The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.3 The following safety hazard caveat pertains only to the test method(s) described in this specification. 1.3.1 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. 1.4 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. ====== Significance And Use ====== 15.1 For purposes of determining compliance with the specified limits for requirements of chemical composition, hardness, and electrical resistivity, an observed value or a calculated value shall be rounded as indicated in accordance with the rounding method of Practice E29 .