The test bars, the system’s essential component, are calibrated to have uniform hardness within 2% of the indicated BHN. Equipment whose accuracy is certified traceable to the National Standards Institute is used to measure the hardness of the bars. The accuracy of the readings is.05 millimetres.
These are the NextGen’s Telebrineller Hardness Test Bars (BHN Values):
|
Telebrineller Hardness Test Bars (BHN Values) |
|||||||||
|
627 |
477 |
388 |
321 |
269 |
229 |
194 |
160 |
135 |
114 |
|
578 |
461 |
375 |
311 |
262 |
223 |
188 |
156 |
131 |
111 |
|
555 |
444 |
363 |
302 |
255 |
217 |
182 |
151 |
127 |
111 |
|
534 |
429 |
352 |
293 |
248 |
212 |
176 |
147 |
124 |
109 |
|
514 |
415 |
341 |
285 |
241 |
207 |
170 |
142 |
121 |
106 |
|
495 |
401 |
331 |
277 |
235 |
200 |
165 |
138 |
117 |
|
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