| 布氏硬度 HB | 洛氏硬度 | 维氏 硬度 HV | 布氏硬度 HB | 洛氏硬度 | 维氏硬度 HV | ||
| Hra | HRC | Hra | HRC | ||||
| 86.6 | 70.0 | 1037 | 78.5 | 55.0 | 599 | ||
| 86.3 | 69.5 | 1017 | 78.2 | 54.5 | 589 | ||
| 86.1 | 69.0 | 997 | 77.9 | 54.0 | 579 | ||
| 85.8 | 68.5 | 978 | 77.7 | 53.5 | 570 | ||
| 85.5 | 68.0 | 959 | 77.4 | 53.0 | 561 | ||
| 85.2 | 67.5 | 941 | 77.1 | 52.5 | 551 | ||
| 85.0 | 67.0 | 923 | 76.9 | 52.0 | 543 | ||
| 84.7 | 66.5 | 906 | 76.6 | 51.5 | 534 | ||
| 84.4 | 66.0 | 889 | 501 | 76.3 | 51.0 | 525 | |
| 84.1 | 65.5 | 872 | 494 | 76.1 | 50.5 | 517 | |
| 83.9 | 65.0 | 856 | 488 | 75.8 | 50.0 | 509 | |
| 83.6 | 64.5 | 840 | 481 | 75.5 | 49.5 | 501 | |
| 83.3 | 64.0 | 825 | 474 | 75.3 | 49.0 | 493 | |
| 83.1 | 63.5 | 810 | 468 | 75.0 | 48.5 | 485 | |
| 82.8 | 63.0 | 795 | 461 | 74.7 | 48.0 | 478 | |
| 82.5 | 62.5 | 780 | 455 | 74.5 | 47.5 | 470 | |
| 82.2 | 62.0 | 766 | 449 | 74.2 | 47.0 | 463 | |
| 82.0 | 61.5 | 752 | 442 | 73.9 | 46.5 | 456 | |
| 81.7 | 61.0 | 739 | 436 | 73.7 | 46.0 | 449 | |
| 81.4 | 60.5 | 726 | 430 | 73.4 | 45.5 | 443 | |
| 81.2 | 60.0 | 713 | 424 | 73.2 | 45.0 | 436 | |
| 80.9 | 59.5 | 700 | 418 | 72.9 | 44.5 | 429 | |
| 80.6 | 59.0 | 688 | 413 | 72.6 | 44.0 | 423 | |
| 80.3 | 58.5 | 676 | 407 | 72.4 | 43.5 | 417 | |
| 80.1 | 58.0 | 664 | 401 | 72.1 | 43.0 | 411 | |
| 79.8 | 57.5 | 653 | 396 | 71.8 | 42.5 | 405 | |
| 79.5 | 57.0 | 642 | 391 | 71.6 | 42.0 | 399 | |
| 79.3 | 56.5 | 631 | 385 | 71.3 | 41.5 | 393 | |
| 79.0 | 56.0 | 620 | 380 | 71.1 | 41.0 | 388 | |
| 78.7 | 55.5 | 609 | 375 | 70.8 | 40.5 | 382 | |
Vifaa vya chuma vyenye ugumu wa thamani ya meza
| 布氏硬度 HB | 洛氏硬度 | 维氏硬度 HV | 布氏硬度 HB | 洛氏硬度 | 维氏硬度 HV | ||
| Hra | HRC | Hra | HRC | ||||
| 370 | 70.5 | 40.0 | 377 | 269 | 28.0 | 274 | |
| 365 | 70.3 | 39.5 | 372 | 266 | 27.5 | 271 | |
| 360 | 70.0 | 39.0 | 367 | 263 | 27.0 | 268 | |
| 355 | 38.5 | 362 | 260 | 26.5 | 264 | ||
| 350 | 38.0 | 351 | 257 | 26.0 | 261 | ||
| 345 | 37.5 | 352 | 254 | 25.5 | 258 | ||
| 341 | 37.0 | 347 | 251 | 25.0 | 255 | ||
| 336 | 36.5 | 342 | 248 | 24.5 | 252 | ||
| 332 | 36.0 | 338 | 245 | 24.0 | 249 | ||
| 327 | 35.5 | 333 | 242 | 23.5 | 246 | ||
| 323 | 35.0 | 329 | 240 | 23.0 | 243 | ||
| 318 | 34.5 | 324 | 237 | 22.5 | 240 | ||
| 314 | 34.0 | 320 | 234 | 22.0 | 237 | ||
| 310 | 33.5 | 316 | 232 | 21.5 | 234 | ||
| 306 | 33.0 | 312 | 229 | 21.0 | 231 | ||
| 302 | 32.5 | 308 | 227 | 20.5 | 229 | ||
| 298 | 32.0 | 304 | 225 | 20.0 | 226 | ||
| 294 | 31.5 | 300 | 222 | 19.5 | 223 | ||
| 291 | 31.0 | 296 | 220 | 19.0 | 221 | ||
| 287 | 30.5 | 292 | 218 | 18.5 | 218 | ||
| 283 | 30.0 | 289 | 216 | 18.0 | 216 | ||
| 280 | 29.5 | 285 | 214 | 17.5 | 214 | ||
| 276 | 29.0 | 281 | 211 | 17.0 | 211 | ||
| 273 | 28.5 | 278 | |||||
Kumbuka:
1. Ugumu wa Brinell: Inatumika sana kupima ugumu wa castings, misamaha, sehemu za chuma zisizo na feri, billets zilizopigwa moto na sehemu zilizowekwa. Aina ya kipimo ni ≥HB450.
2. Ugumu wa Rockwell: HRA hutumiwa hasa kwa vielelezo vya ugumu wa juu kupima ugumu wa uso wa vifaa na nyuso zilizo na ugumu wa juu kuliko HRC67, kama vile carbide iliyo na saruji, chuma cha nitrati, nk. Aina ya kipimo ni HRA> 70. HRC hutumiwa hasa kupima ugumu wa sehemu za chuma (kama vile chuma cha kaboni, chuma cha zana, chuma cha aloi, nk) baada ya kuzima au kuzima. Aina ya kipimo ni HRC20 ~ 67.
3. Ugumu wa Vickers: Inatumika kupima ugumu wa sehemu nyembamba na sehemu za chuma, na pia inaweza kutumika kupima ugumu wa sehemu ngumu za uso kama vile carburizing, cyaniding, na nitriding.
Wakati wa chapisho: Aprili-07-2024