【国外标准】 Standard Practice for Sampling and Procurement Testing of Magnetic Materials

4.1 This practice defines test lots and describes the selection and preparation of test specimens used in the determination of magnetic properties of various materials.4.2 A method of calculating the density of iron-base electrical steels is given and a table of assumed densities for magnetic testing of commercial soft magnetic alloys is provided.1.1 This practice covers sampling procedures and test practices for determination of various magnetic properties of both soft and hard magnetic materials.1.2 This practice may be used either in conjunction with, or independent of, the standard test methods and materials specifications under the jurisdiction of ASTM Committee A06. In the former situation, the sampling and testing procedures listed herein shall not supersede those found in the individual test methods and materials specifications. In the latter situation, the sampling and testing procedures listed herein shall strictly apply.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 standard, SI units are shown in brackets except for the sections concerning calculations where there are separate sections for the respective unit systems. 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 standard.1.4 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.1.5 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.