DATA HASIL UJI KOMPOSISI KIMIA
Tabel konversi nilai kekerasan ASTM E 140 ROCKWELL
ROCKWELL SUPERFICIAL B A F
STANDARD
30T
99.6
65.1 45.8 132 145 132
84.3
98.5
45.8
73
65.7 46.8 135 147 135
84.7
99.1
46.3
74
66.4 47.8 137 150 137
85
46.8
45.3
75
67.1 48.8 139 152 139
85.3
76 47.3 -
67.7 49.8 141 155 141
85.6
77 47.9 -
68.4 50.8 144 158 144
86
78 48.4 -
69.1 51.8 147 161 147
86.3
79 48.9 -
72
98
86.6
83
Universitas Sumatera Utara
61 39.8 119 133 119
82.4
95.1
42.8
67
61.7 40.8 121 135 121
82.7
95.6
43.3
68
62.4 41.8 123 137 123
96.2
84
43.8
69
63.1 42.8 125 139 125
83.4
96.8
44.3
70
63.7 43.8 127 141 127
83.7
97.4
44.8
71
64.4 44.8 130 143 130
69.7 52.8 150 164 150
80 49.5 -
45T Vickers Knoop Brinell 100kg 60kg 60kg 15kg 30kg 45kg 10kg > 500g 3000kgf
80.4 68.9 216 231 216
77.8 64.8 195 211 195
90.5
92 56.4 -
78.4 65.9 200 216 200
90.8
93 57 -
79.1 66.9 205 221 205
91.2
94 57.6 -
79.8 67.9 210 226 210
91.5
95 58.3 -
91.8
90.2
96 58.9 -
81.1 69.9 222 236 222
92.1
97 59.5 -
81.8 70.9 228 241 228
92.5
98 60.2 -
82.5 71.9 234 246 234
92.8
99 60.9 -
83.1 72.9 240 251 240
93.1
HRB HRA HRF HR15T HR30T HR45T HV HK HBS 100 61.5 -
91 55.8 -
77.1 63.8 190 206 190
70.4 53.8 153 167 153
85 52.3 -
15T
81 50 -
71.1 54.8 156 170 156
87.3
82 50.6 -
71.8 55.8 159 173 159
87.6
83 51.1 -
72.4 56.8 162 176 162
87.9
84 51.7 -
73.1 57.8 165 180 165
88.2
73.8 58.8 169 184 169
90 55.2 -
88.6
86 52.8 -
74.4 59.8 172 188 172
88.9
87 53.4 -
75.1 60.8 176 192 176
89.2
88 54 -
75.8 61.8 180 196 180
89.5
89 54.6 -
76.4 62.8 185 201 185
89.9
86.9
- 111
- 53
- 110
- 52
- 109
- 51
- 108
- 50
- 107
- 49
- 106
- 48
- 105
- 47
- 104
- 46
- 103
- 45
- 102
- 44
- 101
- 43
- 100
- 42
- 99
- 41
- 98
- 40
- 97
- 39
- 96
- 38
- 95
- 37
- 94
- 36
- 93
- 35
- 92
- 34
- 91
- 33
- 90
- 32
- 89
- 31
- 88
- Universitas Sumatera Utara
74.9
45.7
16.7
32
81.4
74.6
45
15.7
31.6
74.3
80.8
44.3
14.7
31.2
80.3
74
43.7
13.6
30.7
79.7
82
17.7
32.4
75.9
49
21.7
34.1
84.3
76.2
48.3
20.7
33.7
83.7
47.7
46.3
19.7
33.3
83.1
75.6
47
18.7
32.9
82.6
75.3
73.6
43
12.6
38.3
28.2
76.3
71.7
39
6.6
27.8
75.7
71.4
5.6
39.6
27.4
75.2
71
37.6
4.6
27
74.6
70.7
37
7.6
72
30.3
29.5
79.1
73.3
42.3
11.6
29.9
78.6
73
41.6
10.6
78
76.9
72.7
41
9.6
29.1
77.4
72.3
40.3
8.6
28.7
76.6
84.8
34.6
91.7
58.4 35.7 112 125 112
62
40.4
92.2
80.8
57.7 34.7 110 124 110
61
40
80.5
92.8
57 33.7 108 122 108
60
39.5
91.1
80.1
56.4 32.7 107 120 107
59
39
90.5
81.1
40.9
56.7 31.7 106 118 106
60.4 38.7 117 131 117
ROCKWELL STANDARD ROCKWELL SUPERFICIAL B A F
15T
30T
45T Vikers Knoop Brinell 100kg 60kg 60kg 15kg 30kg 45kg 10kg > 500g 3000kgf
HRB HRA HRF HR15T HR30T HR45T HV HK HBS
66
42.3
94.5
82.1
65
63
41.8
93.9
81.8
59.7 37.7 116 129 116
64
41.4
93.4
81.4
59 36.7 114 127 114
79.8
58
22
51
36.3
87.1
77.9
51.7
25.7
35.9
86.5
77.5
24.7
52.4
35.5
86
77.2
50.3
23.7
35
85.4
76.9
49.7
26.7
78.2
38.6
37.7
90
79.5
55 30.7 104 117 104
57
38.1
89.4
79.2
54.4 29.7 103 115 103
56
88.8
87.7
78.8
53.7 28.7 101 114 101
55
37.2
88.2
78.5
53 27.7 100 112 100
54
36.8
3.6