Hardness Conversion
| Brinnel Hardness(HB) |
Vickers Hardness(HV) |
Rockwell Hardness(HRC) |
Rockwell Hardness(HRB) |
Tensile Strength (KSI) |
| 321 |
339 |
34 |
108 |
158 |
| 311 |
328 |
33 |
108 |
154 |
| 302 |
319 |
32 |
107 |
150 |
| 293 |
309 |
31 |
106 |
146 |
| 285 |
301 |
30 |
105 |
142 |
| 277 |
292 |
29 |
104 |
138 |
| 269 |
284 |
28 |
104 |
135 |
| 262 |
276 |
27 |
103 |
131 |
| 255 |
269 |
25 |
102 |
125 |
| 248 |
261 |
24 |
101 |
121 |
| 241 |
253 |
23 |
100 |
119 |
| 235 |
247 |
22 |
99 |
117 |
| 229 |
241 |
21 |
98 |
113 |
| 223 |
234 |
− |
97 |
110 |
| 217 |
228 |
− |
96 |
107 |
| 212 |
222 |
− |
95 |
102 |
| 207 |
218 |
− |
95 |
100 |
| 202 |
212 |
− |
94 |
98 |
| 197 |
207 |
− |
93 |
96 |
| 192 |
202 |
− |
92 |
94 |
| 187 |
196 |
− |
91 |
90 |
| 183 |
192 |
− |
90 |
89 |
| 179 |
188 |
− |
89 |
87 |
| 174 |
182 |
− |
88 |
84 |
| 170 |
178 |
− |
87 |
82 |
| 166 |
175 |
− |
86 |
80 |
| 163 |
171 |
− |
85 |
78 |
| 159 |
167 |
− |
84 |
77 |
| 156 |
163 |
− |
83 |
76 |
| 153 |
160 |
− |
82 |
75 |
| 149 |
156 |
− |
81 |
74 |
| 146 |
153 |
− |
80 |
72 |
| 143 |
150 |
− |
79 |
71 |
| 140 |
147 |
− |
78 |
70 |
| 137 |
143 |
− |
76 |
67 |
| 134 |
140 |
− |
75 |
66 |
| 131 |
137 |
− |
74 |
65 |
| 128 |
134 |
− |
73 |
64 |
| 126 |
132 |
− |
72 |
63 |
| 124 |
129 |
− |
71 |
62 |
| 121 |
127 |
− |
70 |
60 |
| 118 |
124 |
− |
69 |
59 |
| 116 |
122 |
− |
68 |
58 |
| 114 |
119 |
− |
67 |
57 |
| 111 |
117 |
− |
66 |
56 |