Common High-Temp NdFeB Magnet Grades for New Energy Vehicle Motors

Many EV traction motors run at 120–180°C, requiring high-coercivity neodymium magnets to avoid demagnetization. N42SH and N45SH (max 150°C) are mainstream for standard passenger EVs. N38UH / N40UH withstand 180°C for high-performance  vehicles. Engineers pick grades based on peak motor heat and load cycles. If you need grade matching guidance for your motor designs, feel free to reach out for professional technical support.