Specification of Sintered Isotropic NdFeB Magnets     Grade (BH)max(MGOe) Br(kGs) Hci(kOe) I-14 13.5-14.5 8.0-9.2 7.5-8.5 I-15 14.5-15.5 8.1-8.4 15.0-16.3 I-16 15.5-16.5 8.4-8.9 15.0-18.0 I-17 16.5-17.5 8.8-9.5 8.2-13.4 I-18 17.5-18.5 9.3-9.8 8.0-9.0 I-19 18.5-19.5 9.3-9.8 11.7-14.6