GB/T 38090-2019 Technical requirements of permanent magnets for drive motor of electric vehicle

GB/T 2828.1-2012 Sampling procedures for inspection by attributes—Part 1:Sampling schemes indexed by acceptance quality limit(AQL) for lot-by-lot inspection GB/T 2900.60-2002 Electrotechnical terminology—Electromagnetism GB/T 6461-2002 Methods for corrosion testing of metallic and other inorganic coatings on metallic substrates—Rating of test specimens and manufactured articles subjected to corrosion tests GB/T 9637-2001 Electrotechnical terminology— Magnetic materials and components IEC 60404-14 GB/T 3217-1992 Methods of test of the magnetic properties of permanent magnetic (magnetically hard) materials GB/T 3217-2013 Permanent magnet(magnetically hard)materials—Methods of measurement of magnetic properties GB/T 6462-1986 Metallic and oxide coatings—Measurement of coating thickness—Microscopical method GB/T 6462-2005 Metallic and oxide coatings—Measurement of coating thickness—Microscopical method GB/T 10125-1997 Corrosion tests in artificial atmospheres—Salt spray tests GB/T 10125-2012 Corrosion tests in artificial atmospheres—Salt spray tests GB/T 10125-2021 Corrosion tests in artificial atmospheres—Salt spray tests GB/T 24270-2009 Method of measurement of temperature coefficient of magnetic properties of permanent magnetic materials GB/T 29628-2013 Guides for methods of measurement of the magnetic properties of permanent(magnetically hard) materials by pulsed field magnetometry GB/T 31967.2-2015 Test method for physical property of rare earth permanent magnetic materials—Part 2:Determination of bending strength and fracture toughness GB/T 34491-2017 Coatings for sintered neodymium iron boron permanent magnets GB/T 6462-2025 Metallic and oxide coatings—Measurement of coating thinckness—Microscopical method