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Padrão de Dureza MPA/Alemanha
Escala Rockwell, faixas disponíveis:
. HR-A: 40 / 49 / 55 / 59 / 62 / 65 / 67 / 70 / 72 / 75 / 78 / 80 / 82 / 83
. HR-B: 60 / 75 / 90 / 100
. HR-C: 20 / 25 / 30 / 35 / 40 / 45 / 50 / 55 / 60 / 62 / 65
. HR-F: 84 / 90 / 95 / 115
. HR-15N: 67 / 70 / 73 / 76 / 79 / 81 / 84 / 87 / 89 / 90 / 91
. HR-30N: 41 / 45 / 50 / 54 / 59 / 63 / 68 / 72 / 76 / 79 / 81
. HR-45N: 19 / 25 / 31 / 37 / 42 / 48 / 54 / 60 / 65 / 68 / 71
. HR-15T: 66 / 76 / 80 / 86 / 91 / 92
. HR-30T: 27 / 48 / 56 / 69 / 77 / 82
. HR-45T: 20 / 33 / 52 / 64 / 72
