GB/T 41967-2022 Anisotropic neodymium iron boron permanent magnetic powder

GB/T 1479.1-2011 Metallic powders—Determination of apparent density—Part 1:Funnal method GB/T 1480-1995 Determination of particle size for metallic powders—Dry sieving GB/T 1480-2012 Metallic powders—Determination of particle size by dry sieving 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 3850-1983 Impermeable sintered metal materials and hardmetals—determination of density GB/T 3850-2015 Impermeable sintered metal materials and hardmetals—Determination of density GB/T 8170-1987 Rules for rounding off of numberical values GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values GB/T 9637-2001 Electrotechnical terminology— Magnetic materials and components GB/T 15676-1995 Terms for rare earths GB/T 15676-2015 Terms for rare earths GB/T 24270-2009 Method of measurement of temperature coefficient of magnetic properties of permanent magnetic materials GB 39176-2020 Rare earth products packing,marking,transport and storage GB/T 40794-2021 Measurement method of irreversible magnetic flux loss due to high temperature of rare earth permanent magnet GB/T 1480-2025 Metallic powders—Determination of particle size by dry sieving