1.1本规范涵盖了平轧无取向半加工电工钢应符合的详细要求。 1.2该钢按规定的最大铁心损耗值生产，主要用于磁性设备中的商业工频（50和60 Hz）应用。买方可通过进一步热处理来获得理想的铁芯损耗和磁导率特性。 1.3这些无取向半加工电工钢是低碳、硅铁或硅铝铁合金，含约3.5%的硅和少量铝。 注:本规范是规范A683的公制配套规范。

1.1 This specification covers the detailed requirements to which flat-rolled, nonoriented semiprocessed electrical steel shall conform. 1.2 This steel is produced to specified maximum core-loss values and is intended primarily for commercial power frequency (50 and 60 Hz) applications in magnetic devices. Desirable core-loss and permeability characteristics are developed by further heat treatment by the purchaser. 1.3 These nonoriented semiprocessed electrical steels are low carbon, silicon-iron or silicon-aluminum-iron alloys containing up to about 3.5% silicon and a small amount of aluminum. Note-This specification is the metric companion to Specification A683.