This standard specifies the method of measuring the conductivity of non-ferromagnetic metals using electromagnetic (eddy current) technology. It is suitable for instruments that can directly read the conductivity and can be used for the detection of flat or curved metals without coatings or with thin nonconductive coatings. The standard specifies the factors that affect the conductivity measurement results, such as alloy type, aging, cold deformation, heat treatment, etc., and emphasizes the importance of standard test blocks in measurement. This standard provides important technical support for metal sorting and material testing, and is suitable for material inspection and quality control.