IEC 60404-8-4:20 22 RLV包含官方IEC国际标准及其红线版本。Redline版本仅提供英文版本，为您提供了一种快速简单的方法来比较IEC官方标准与其以前版本之间的所有变化。 IEC 60404-8-4:20 22定义了标称厚度为0.35毫米、0.47毫米、0.50毫米、0.65毫米和1.00毫米的冷轧无取向电工钢带和板材的等级。特别是，它给出了一般要求、磁性能、几何特性、公差和工艺特性以及检验程序。标称厚度0.47 mm适用于仅在60 Hz下使用的等级。本文件适用于冷轧无取向电工钢带和板材。线圈或片材中的加工状态，即最终退火状态，用于构建磁路。本文件不适用于半加工状态下供应的物料。与上一版相比，此版本包括以下重大技术变更: -修改有关几何特征的术语和技术要求，以符合IEC 60404-9:20 18； -插入表3-标称厚度公差； -将用于确定几何特性的试样长度从2 m改为1 m。

IEC 60404-8-4:2022 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition.

IEC 60404-8-4:2022 defines the grades of cold-rolled non-oriented electrical steel strip and sheet in nominal thicknesses of 0,35 mm, 0,47 mm, 0,50 mm, 0,65 mm and 1,00 mm. In particular, it gives general requirements, magnetic properties, geometric characteristics, tolerances and technological characteristics, as well as inspection procedure. The nominal thickness 0,47 mm applies to the grades for use at 60 Hz only. This document applies to cold-rolled non-oriented electrical steel strip and sheet supplied in the fully-processed state, i.e. the final annealed condition, in coils or sheets, and intended for the construction of magnetic circuits. This document does not apply to materials supplied in the semi-processed state. This edition includes the following significant technical changes with respect to the previous edition:
- modification of terms and technical requirements concerning geometrical characteristics to be consistent with IEC 60404-9:2018;
- insertion of Table 3 - Tolerances on nominal thickness;
- change of the length of test specimen for determination of geometrical characteristics from 2 m to 1 m.