JIS Z 2320-1:2017规定了铁磁性材料磁粉检测的一般原则。磁粉检测主要适用于检测表面断裂不连续性，尤其是裂纹。它还可以探测地表以下的不连续性，但其灵敏度随着深度的增加而迅速降低。本标准规定了待测零件的表面处理、磁化技术、检测介质的要求和应用，以及结果的记录和解释。 验收标准没有定义。产品标准中定义了特定项目的附加要求。

JIS Z 2320-1:2017 specifies general principles for the magnetic particle testing of ferromagnetic materials. Magnetic particle testing is primarily applicable to the detection of surface-breaking discontinuities, particularly cracks. It can also detect discontinuities just below the surface but its sensitivity diminishes rapdily with depth. This Standard specifies the surface preparation of the part to be tested, magnetization techniques, requirements and application of the detection media, and the recording and interpretation of results. Acceptance criteria are not defined. Additional requirements for the particular items are defined in product standards.