Home / Standards / GB/T 42160-2022 GB/T 42160-2022 Active Grain boundary diffusion neodymium iron boron permanent magnet materials 晶界扩散钕铁硼永磁材料 Standard Type GBT ICS 77.150.99 CCS H65 Status 现行 Issue Date 2022-12-30 Implementation 2023-07-01 Responsible Dept 国家标准委 Drafting Unit N/A