1.1 本规范涵盖了扁轧薄规格无取向全加工电工钢应符合的详细要求。本规范中包括的标称厚度为0.10 mm（0.004 in.）至0.30毫米（0.012英寸）。 1.1.1 参考规范 A677型 用于标称厚度为0.36 mm（0.014 in.）的平整轧制无取向全加工电工钢的性能至0.64毫米（0.025英寸）。 1.1.2 参考规范 A876 用于平整轧制晶粒取向全加工电工钢的性能。 1.1.3 高硅含量的薄规格无取向电工钢（通常为6 1. / 2. %)本规范不包括使用硅气相沉积或类似工艺制造的。 1.2 本规范中涵盖的钢材是按照规定的最大铁心损耗值生产的，主要用于旋转电机和其他以中等至较高频率（100 Hz及以上）运行的电磁设备。 在磨机加工过程中形成了理想的芯损耗和磁导率特性；然而，层压制造工艺可能会对这些工厂生产的性能产生不利影响。因此，用户进行的额外应力消除热处理可能有助于修复制造的叠片中的这些特性。应力消除退火在 附录X2 . 1.3 这些薄型无取向全加工电工钢是低碳、硅铁或硅铝铁合金，通常含有2.5至3.5 % 硅和少量铝。 1.4 以国际单位制表示的数值应视为标准值。括号中给出的数值是到常用（cgs-emu和inch-pound）单位的数学转换，仅供参考，不被视为标准。 1.4.1 有两个单位表示的选定值，均采用可接受的国际单位制。这些由“或”一词区分，如“g/cm” 3. ，或（千克/米） 3. ).” 1.5 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。 1.6 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 covers the detailed requirements to which flat-rolled thin-gauge nonoriented fully processed electrical steel shall conform. Nominal thicknesses included in this specification are 0.10 mm (0.004 in.) to 0.30 mm (0.012 in.). 1.1.1 Refer to Specification A677 for properties of flat-rolled nonoriented fully processed electrical steel in nominal thicknesses of 0.36 mm (0.014 in.) to 0.64 mm (0.025 in.). 1.1.2 Refer to Specification A876 for properties of flat-rolled grain-oriented fully processed electrical steel. 1.1.3 Thin-gauge nonoriented electrical steels with a high silicon content (typically 6 1 / 2 %) manufactured using silicon vapor-deposition or similar processes are not included in this specification. 1.2 The steel covered in this specification is produced to specified maximum core loss values and is intended primarily for use in rotating electrical machinery and other electromagnetic devices operating at moderate to elevated frequencies (100 Hz and greater). Desirable core loss and permeability characteristics are developed during mill processing; however, lamination manufacturing processes may adversely affect these mill-produced properties. Additional stress-relief heat treatment by the user may therefore be helpful in remediating these properties in the manufactured laminations. Stress-relief annealing is discussed further in Appendix X2 . 1.3 These thin-gauge nonoriented fully processed electrical steels are low-carbon, silicon-iron, or silicon-aluminum-iron alloys typically containing 2.5 to 3.5 % silicon and a small amount of aluminum. 1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to customary (cgs-emu and inch-pound) units which are provided for information only and are not considered standard. 1.4.1 There are selected values presented in two units, both of which are in acceptable SI units. These are differentiated by the word “or,” as in “g/cm 3 , or, (kg/m 3 ).” 1.5 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. 1.6 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.