1.1 本试验方法涵盖了通过使用各种称为锡制动器、手夹或平板制动器的装置来测定晶粒取向硅钢的延展性。 1.2 以惯用（cgs emu和英寸磅）或国际单位制表示的值和方程应单独视为标准。在本试验方法中，括号中显示了国际单位制。每个系统中规定的值可能不是精确的等效值；因此，每个系统应相互独立使用。结合两个系统的值可能会导致与本试验方法不一致。 1.3 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====== 4.1 这是一种专门的晶粒取向钢弯曲试验，不在试验方法的规定范围内 E290型 . 4.2 本试验适用于规范中涵盖的晶粒取向硅钢 A876 商用厚度和宽度高达36英寸。[910毫米]。

1.1 This test method covers determination of the ductility of grain-oriented silicon steel by use of an apparatus known variously as a tinner's brake, hand folder, or an apron brake. 1.2 The values and equations stated in customary (cgs-emu and inch-pound) or SI units are to be regarded separately as standard. Within this test method, 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 nonconformance with this test method. 1.3 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 ====== 4.1 This is a specialized bend test for grain-oriented steel not covered under the provisions of Test Methods E290 . 4.2 This test is applicable to grain-oriented silicon steel such as covered in Specification A876 in commercial thicknesses and widths up to 36 in. [910 mm].