... Process Chart of NdFeB: Geade: N 35,38, 40, 42, 45, 48, 50, 52--- Max working temp. 80°C M 35,38 ... , 40, 42, 45, 48, 50--- Max working temp. 100°C H35,38, 40, 42 ... , 45, 48--- Max working temp. 120°C SH30,33,35,38, 40, ... 42, 45, 48--- Max working temp. 150°C UH30,33,35,38, 40 ...