Hardness Conversion Chart
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| Rockwell C Scale |
Brinell Hardness |
Vickers Hardness |
Tensile Strength (approx.) |
Rockwell C Scale |
Brinell Hardness |
Vickers Hardness |
Tensile Strength (approx.) |
| Brale Penetrator |
10mm Tungscen Carbide Ball |
Pyramidic Diamond |
Brale Penetrator |
10 mm Tungscen Carbide Ball |
Pyramdic Diamond |
| 150kgf |
3,00kgf |
10kgf |
ksi |
kg/mm |
150kgf |
3,000kgf |
10kgf |
ksi |
kg/mm |
| 67 |
- |
900 |
- |
- |
43 |
400 |
423 |
201 |
141 |
| 66 |
- |
865 |
- |
- |
42 |
390 |
412 |
196 |
138 |
| 65 |
739 |
832 |
- |
- |
41 |
381 |
402 |
191 |
134 |
| 64 |
772 |
800 |
- |
- |
40 |
371 |
392 |
186 |
131 |
| 63 |
705 |
772 |
- |
- |
39 |
362 |
382 |
181 |
127 |
| 62 |
688 |
746 |
- |
- |
38 |
353 |
372 |
176 |
124 |
| 61 |
670 |
720 |
- |
- |
37 |
344 |
363 |
172 |
121 |
| 60 |
654 |
697 |
- |
- |
36 |
336 |
354 |
167 |
118 |
| 59 |
634 |
674 |
329 |
232 |
35 |
327 |
345 |
163 |
114 |
| 58 |
615 |
653 |
319 |
224 |
34 |
319 |
336 |
159 |
112 |
| 57 |
772 |
800 |
- |
- |
40 |
371 |
392 |
186 |
131 |
| 56 |
577 |
613 |
307 |
216 |
33 |
311 |
327 |
154 |
109 |
| 55 |
560 |
595 |
288 |
202 |
31 |
294 |
310 |
146 |
102 |
| 54 |
543 |
577 |
279 |
196 |
30 |
286 |
302 |
142 |
99 |
| 53 |
525 |
560 |
269 |
189 |
29 |
279 |
294 |
138 |
97 |
| 52 |
512 |
544 |
262 |
184 |
28 |
271 |
286 |
134 |
94 |
| 51 |
496 |
538 |
253 |
178 |
27 |
264 |
279 |
130 |
92 |
| 52 |
512 |
544 |
262 |
184 |
28 |
271 |
286 |
134 |
94 |
| 51 |
496 |
528 |
253 |
178 |
27 |
264 |
279 |
130 |
92 |
| 50 |
481 |
513 |
245 |
172 |
26 |
258 |
272 |
127 |
89 |
| 49 |
469 |
498 |
238 |
167 |
25 |
253 |
266 |
125 |
88 |
| 48 |
455 |
484 |
231 |
162 |
24 |
247 |
260 |
122 |
85 |
| 47 |
443 |
471 |
224 |
158 |
23 |
243 |
254 |
120 |
84 |
| 46 |
432 |
458 |
218 |
153 |
22 |
237 |
248 |
116 |
82 |
| 45 |
421 |
446 |
212 |
149 |
21 |
231 |
243 |
113 |
80 |
| 44 |
409 |
434 |
206 |
145 |
20 |
226 |
238 |
111 |
78 |
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