No. 99MBG518A
K-19
PART K : 3 Conversion Tables
ASTM E140 TABLE2
HRB HV
HBS
10/3000
HK0.5 &
Over
HRA HRF HR15T HR30T HR45T
57 103 103 115 38.1 89.4 79.2 54.4 29.7
56 101 101 114 37.7 88.8 78.8 53.7 28.7
55 100 100 112 37.2 88.2 78.5 53.0 27.7
54 — — 111 36.8 87.7 78.2 52.4 26.7
53 — — 110 36.3 87.1 77.9 51.7 25.7
52 — — 109 35.9 86.5 77.5 51.0 24.7
51 — — 108 35.5 86.0 77.2 50.3 23.7
50 — — 107 35.0 85.4 76.9 49.7 22.7
49 — — 106 34.6 84.8 76.6 49.0 21.7
48 — — 105 34.1 84.3 76.2 48.3 20.7
47 — — 104 33.7 83.7 75.9 47.7 19.7
46 — — 103 33.3 83.1 75.6 47.0 18.7
45 — — 102 32.9 82.6 75.3 46.3 17.7
44 — — 101 32.4 82.0 74.9 45.7 16.7
43 — — 100 32.0 81.4 74.6 45.0 15.7
42 — — 99 31.6 80.8 74.3 44.3 14.7
41 — — 98 31.2 80.3 74.0 43.7 13.6
40 — — 97 30.7 79.7 73.6 43.0 12.6
39 — — 96 30.3 79.1 73.3 42.3 11.6
38 — — 95 29.9 78.6 73.0 41.6 10.6
37 — — 94 29.5 78.0 72.7 41.0 9.6
36 — — 93 29.1 77.4 72.3 40.3 8.6
35 — — 92 28.7 76.9 72.0 39.6 7.6
34 — — 91 28.2 76.3 71.7 39.0 6.6
33 — — 90 27.8 75.7 71.4 38.3 5.6
32 — — 89 27.4 75.2 71.0 37.6 4.6
31 — — 88 27.0 74.6 70.7 37.0 3.6
30 — — 87 26.6 74.0 70.4 36.3 2.6