Muon radiative energy loss (in 1.0E06 cm^2/g) in Hafnium with Z = 72, A = 178.49(2) (f12.0,4f12.4) E (GeV) b_brem b_pair b_nucl b_total 2. 1.7680 0.4895 0.3682 2.6256 5. 2.4484 1.8526 0.3932 4.6942 10. 3.0033 2.9099 0.3855 6.2987 20. 3.5727 3.9023 0.3669 7.8418 50. 4.3182 5.4060 0.3563 10.0805 100. 4.8487 6.4016 0.3490 11.5993 200. 5.3335 7.2862 0.3456 12.9652 500. 5.8785 8.0984 0.3457 14.3226 1000. 6.2073 8.5294 0.3511 15.0878 2000. 6.4635 8.8407 0.3596 15.6637 5000. 6.7016 9.1010 0.3750 16.1777 10000. 6.8197 9.2214 0.3904 16.4316 20000. 6.8980 9.2999 0.4083 16.6063 50000. 6.9628 9.3586 0.4363 16.7577 100000. 6.9917 9.3830 0.4601 16.8348