1.1 本试验方法包括层压系数的测量( 注1 )由从磁性材料上切下的条状物组成的试样。 注1: 叠层因子也称为空间因子或叠加因子。 1.2 本试验方法应结合实践使用 A34/A34M . 1.3 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。 1.4 本标准无意解决与其使用相关的安全问题。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。 1.5 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 层压系数， S ，表示由于氧化物、粗糙度、绝缘涂层和影响钢表面的其他条件的存在而导致的有效钢体积不足。 4.2 术语层压系数， S ，严格适用于根据本试验方法的精确取样和程序确定材料比例。术语层压系数的替代用法已演变为包括本试验方法上下文之外的取样和程序。 替代取样和程序的考虑不应包括在本试验方法的范围内。

1.1 This test method covers measurement of the lamination factor ( Note 1 ) of a specimen composed of strips cut from magnetic material. Note 1: Lamination factor is also termed space factor or stacking factor. 1.2 This test method shall be used in conjunction with Practice A34/A34M . 1.3 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. 1.4 This standard does not purport to address the safety concerns 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. 1.5 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 Lamination factor, S , indicates the deficiency of effective steel volume which is due to the presence of oxides, roughness, insulating coatings, and other conditions affecting the steel surface. 4.2 The term Lamination Factor, S , pertains strictly to the determination of the proportion of material as defined by precise sampling and procedures of this test method. Alternative usage of the term Lamination Factor has evolved to include sampling and procedures outside of the context of this test method. Consideration of alternative sampling and procedures should not be included within the scope of this test method.