Home / Standards / GB/T 39494-2020 GB/T 39494-2020 Active Determination for coating adhesion of rare earth permanent magnetic materials for drive motor of new energy vehicle 新能源汽车驱动电机用稀土永磁材料表面涂镀层结合力的测定 Standard Type GBT ICS 77.120.99 CCS H14 Status 现行 Issue Date 2020-11-19 Implementation 2021-10-01 Responsible Dept 国家标准委 Drafting Unit N/A