Technical
Hardness Comparison Table
| Vickers' Hardness (DPH) | Brinell Hardness 10mm Diam Ball Load: 3000 kg | Rockwell Hardness (2) | Rockwell Special Hardness Special Brale Equipment | Shore Hardness | Tensile Strength (100sq/m2 approx) | Vickers' Hardness Load: 50kg | |||||||
| Std Ball | Hultgren Ball | Tungstic Carbide Ball | A Scale Load: 60kg Brale Equip | B Scale Load: 100kg 1/16in. Diam Ball | C Scale Load: 150kg Brale Equip | D Scale Load: 100kg Brale Equip | 15-N Scale Load: 15kg | 30-N Scale Load: 30kg | 45-N Scale Load: 45kg | ||||
| 410 | 388 | 388 | 388 | 71.4 | - | 41.8 | 56.8 | 81.4 | 61.1 | 45.3 | - | 195 | 410 |
| 400 | 379 | 379 | 379 | 70.8 | - | 40.8 | 56 | 81 | 60.2 | 44.1 | 55 | 190 | 400 |
| 390 | 369 | 369 | 369 | 70.3 | - | 39.8 | 55.2 | 80.3 | 59.3 | 42.9 | - | 185 | 390 |
| 380 | 360 | 360 | 360 | 69.8 | -110 | 38.8 | 54.4 | 79.8 | 58.4 | 41.7 | 52 | 180 | 380 |
| 370 | 350 | 350 | 350 | 69.2 | - | 37.7 | 53.6 | 79.2 | 57.4 | 40.4 | - | 175 | 370 |
| 360 | 341 | 341 | 341 | 68.7 | -109 | 36.6 | 52.8 | 78.6 | 56.4 | 39.1 | 50 | 170 | 360 |
| 350 | 331 | 331 | 331 | 68.1 | - | 35.5 | 51.9 | 78 | 55.4 | 37.8 | - | 166 | 350 |
| 340 | 322 | 322 | 322 | 67.6 | -108 | 34.4 | 51.1 | 77.4 | 54.4 | 36.5 | 47 | 161 | 340 |
| 330 | 313 | 313 | 313 | 67 | - | 33.3 | 50.2 | 76.8 | 53.6 | 35.2 | - | 156 | 330 |
| 320 | 303 | 303 | 303 | 66.4 | -107 | 32.2 | 49.4 | 76.2 | 52.3 | 33.9 | 45 | 151 | 320 |
| 310 | 294 | 294 | 294 | 65.8 | - | 31 | 48.4 | 75.6 | 51.3 | 32.5 | - | 146 | 310 |
| 300 | 284 | 284 | 284 | 65.2 | -105.5 | 29.8 | 47.5 | 74.9 | 50.2 | 31.1 | 42 | 141 | 300 |
| 295 | 280 | 280 | 280 | 64.8 | - | 29.2 | 47.1 | 74.6 | 49.7 | 30.4 | - | 139 | 295 |
| 290 | 275 | 275 | 275 | 64.5 | -104.5 | 28.5 | 46.5 | 74.2 | 49 | 29.5 | 41 | 136 | 290 |
| 285 | 270 | 270 | 270 | 64.2 | - | 27.8 | 46 | 73.8 | 48.4 | 28.7 | - | 134 | 285 |
| 280 | 265 | 265 | 265 | 63.8 | -103.5 | 27.1 | 45.3 | 73.4 | 47.8 | 27.9 | 40 | 131 | 280 |
| 275 | 261 | 261 | 261 | 63.5 | - | 26.4 | 44.9 | 73 | 47.2 | 27.1 | - | 129 | 275 |
| 270 | 256 | 256 | 256 | 63.1 | -102 | 25.4 | 44.3 | 72.6 | 46.4 | 26.2 | 38 | 126 | 270 |
| 265 | 252 | 252 | 252 | 62.7 | - | 24.8 | 43.7 | 72.1 | 45.7 | 25.2 | - | 124 | 265 |
| 260 | 247 | 247 | 247 | 62.4 | -101 | 24 | 43.1 | 71.6 | 45 | 24.3 | 37 | 121 | 260 |
| 255 | 243 | 243 | 243 | 62 | - | 23.1 | 42.2 | 71.1 | 44.2 | 23.2 | - | 119 | 255 |
| 250 | 238 | 238 | 238 | 61.6 | 99.5 | 22.2 | 41.7 | 70.6 | 43.4 | 22.2 | 36 | 116 | 250 |
| 245 | 233 | 233 | 233 | 61.2 | - | 21.3 | 41.1 | 70.1 | 42.5 | 21.1 | - | 114 | 245 |
| 240 | 228 | 228 | 228 | 60.7 | 98.1 | 20.3 | 40.3 | 69.6 | 41.7 | 19.9 | 34 | 110 | 240 |
| 230 | 219 | 219 | 219 | - | 96.7 | -18 | - | - | - | - | 33 | 106 | 230 |
| 220 | 209 | 209 | 209 | - | 95 | -15.7 | - | - | - | - | 32 | 101 | 220 |
| 210 | 200 | 200 | 200 | - | 93.4 | -13.4 | - | - | - | - | 30 | 97 | 210 |
| 200 | 190 | 190 | 190 | - | 91.5 | -11 | - | - | - | - | 29 | 92 | 200 |
| 190 | 181 | 181 | 181 | - | 89.4 | -8.5 | - | - | - | - | 28 | 88 | 190 |
| 180 | 171 | 171 | 171 | - | 87.1 | -6 | - | - | - | - | 26 | 84 | 180 |
| 170 | 162 | 162 | 162 | - | 85 | -3 | - | - | - | - | 25 | 79 | 170 |
| 160 | 152 | 152 | 152 | - | 81.7 | 0 | - | - | - | - | 24 | 75 | 160 |
| 150 | 143 | 143 | 143 | - | 78.7 | - | - | - | - | - | 22 | 71 | 150 |
| 140 | 133 | 133 | 133 | - | 75 | - | - | - | - | - | 21 | 66 | 140 |
| 130 | 124 | 124 | 124 | - | 71.2 | - | - | - | - | - | 20 | 62 | 130 |
| 120 | 114 | 114 | 114 | - | 66.7 | - | - | - | - | - | - | 57 | 120 |
| 110 | 105 | 105 | 105 | - | 62.3 | - | - | - | - | - | - | - | 110 |
| 100 | 95 | 95 | 95 | - | 56.2 | - | - | - | - | - | - | - | 100 |
| 95 | 90 | 90 | 90 | - | 52 | - | - | - | - | - | - | - | 95 |
| 90 | 86 | 86 | 86 | - | 48 | - | - | - | - | - | - | - | 90 |
| 85 | 81 | 81 | 81 | - | 41 | - | - | - | - | - | - | - | 85 |