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 HRC HRA HRC HRA HRC
86.6 70.0 1037 78.5 55.0 599 370 70.5 40.0 377 269 28.0 274
86.3 69.5 1017 78.2 54.5 589 365 70.3 39.5 372 266 27.5 271
86.1 69.0 997 77.9 54.0 579 360 70.0 39.0 367 263 27.0 268
85.8 68.5 978 77.7 53.5 570 355 38.5 362 260 26.5 264
85.5 68.0 959 77.4 53.0 561 350 38.0 351 257 26.0 261
85.2 67.5 941 77.1 52.5 551 345 37.5 352 254 25.5 258
85.0 67.0 923 76.9 52.0 543 341 37.0 347 251 25.0 255
84.7 66.5 906 76.6 51.5 534 336 36.5 342 248 24.5 252
84.4 66.0 889 501 76.3 51.0 525 332 36.0 338 245 24.0 249
84.1 65.5 872 494 76.1 50.5 517 327 35.5 333 242 23.5 246
83.9 65.0 856 488 75.8 50.0 509 323 35.0 329 240 23.0 243
83.6 64.5 840 481 75.5 49.5 501 318 34.5 324 237 22.5 240
83.3 64.0 825 474 75.3 49.0 493 314 34.0 320 234 22.0 237
83.1 63.5 810 468 75.0 48.5 485 310 33.5 316 232 21.5 234
82.8 63.0 795 461 74.7 48.0 478 306 33.0 312 229 21.0 231
82.5 62.5 780 455 74.5 47.5 470 302 32.5 308 227 20.5 229
82.2 62.0 766 449 74.2 47.0 463 298 32.0 304 225 20.0 226
82.0 61.5 752 442 73.9 46.5 456 294 31.5 300 222 19.5 223
81.7 61.0 739 436 73.7 46.0 449 291 31.0 296 220 19.0 221
81.4 60.5 726 430 73.4 45.5 443 287 30.5 292 218 18.5 218
81.2 60.0 713 424 73.2 45.0 436 283 30.0 289 216 18.0 216
80.9 59.5 700 418 72.9 44.5 429 280 29.5 285 214 17.5 214
80.6 59.0 688 413 72.6 44.0 423 276 29.0 281 211 17.0 211
80.3 58.5 676 407 72.4 43.5 417 273 28.5 278
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
Provided by Hi-Qos Tooling Industry Ltd.
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注:
1.布氏硬度:主要用来测定铸件、锻件、有色金属制件、热轧坯料及退火件的硬度,测定范围≯HB450。
HB mainly is used in checking the casting,stamping, nonferrous metal etc..., the hardness<=HB450.
2.洛氏硬度:HRA主要用于高硬度试件,测定硬度高于HRC67以上的材料和表面硬度,如硬质合金、氮化钢
等,测定范围HRA>70。HRC主要用于钢制件(如碳钢、工具钢、合金钢等)淬火或回火后的硬度测定,测
定范围HRC20~67。
HRA mainly is used in checking the hardness>=HRC67 steel, HRC mainly is used in checking the
hardness between HRC20 and HRC70.
3.维氏硬度:用来测定薄件和钢板制件的硬度,也可用来测定渗碳、氰化、氮化等表面硬化制件的硬度。
HV mainly is used in checking the surface hardness of the parts.
洛氏硬度
维氏硬度
HV
布氏硬度
HB
洛氏硬度

 
 
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