Home / Standards / GB/T 42668-2023 GB/T 42668-2023 Active Samarium-iron-nitrogen permanent magnetic powder for bonded magnet 钐铁氮粘结永磁粉 Standard Type GBT ICS 77.120.99 CCS H65 Status 现行 Issue Date 2023-08-06 Implementation 2024-03-01 Responsible Dept 国家标准委 Drafting Unit N/A