Bảng chuyển đổi giá trị độ cứng theo loại vật liệu Bảng chuyển đổi giá trị độ cứng theo loại vật liệu (Áp dụng cho Vật liệu được làm cứng và Hợp kim cứng) ROCKWELL (HR) VICKER BRINELL SHORE C A D G 15N 30N 45N HV HB/30 HS 80 92.0 86.5 96.5 92.0 87.0 1865 79 91.5 85.5 91.5 86.5 1787 78 91.0 84.5 96.0 91.0 85.5 1710 77 90.5 84.0 90.5 84.5 1633 76 90.0 83.0 95.5 90.0 83.5 1556 75 89.5 82.5 89.0 82.5 1478 74 89.0 81.5 95.0 88.5 81.5 1400 73 88.5 81.0 88.0 80.5 1323 72 88.0 80.0 94.5 87.0 79.5 1245 71 87.0 79.5 86.5 78.5 1160 70 86.5 78.5 94.0 86.0 77.5 1076 69 86.0 78.0 93.5 85.0 76.5 1004 68 85.5 77.0 84.5 75.5 942 97 67 85.0 76.0 93.0 83.5 74.5 894 95 66 84.5 75.5 92.5 83.0 73.0 854 92 65 84.0 74.5 92.0 82.0 72.0 820 91 64 83.5 74.0 81.0 71.0 789 88 63 83.0 73.0 91.5 80.0 70.0 763 87 62 82.5 72.5 91.0 79.0 69.0 739 85 61 81.5 71.5 90.5 78.5 67.5 716 83 60 81.0 71.0 90.0 77.5 66.5 695 614 81 59 80.5 70.0 89.5 76.5 65.5 675 600 80 58 80.0 69.0 75.5 64.0 655 587 78 57 79.5 68.5 89.0 75.0 63.0 636 573 76 56 79.0 67.5 88.5 74.0 62.0 617 560 75 55 78.5 67.0 88.0 73.0 61.0 598 547 74 54 78.0 66.0 87.5 72.0 59.5 580 534 72 53 77.0 65.5 87.0 71.0 58.5 562 522 71 52 77.0 64.5 86.5 70.5 57.5 545 509 69 51 76.5 64.0 86.0 69.5 56.0 528 496 68 50 76.0 63.0 85.5 68.5 55.0 513 484 67 49 75.5 62.0 85.0 67.5 54.0 498 472 66 48 74.5 61.5 84.5 66.5 52.5 485 460 64 47 74.0 60.5 84.0 66.0 51.5 471 448 63 46 73.5 60.0 83.5 65.0 50.0 458 437 62 45 73.0 59.0 83.0 64.0 49.0 446 426 60 44 72.5 58.5 82.5 63.0 48.0 435 415 58 43 72.0 57.5 82.0 62.0 46.5 424 404 57 42 71.5 56.5 81.5 61.5 45.5 413 393 56 41 71.0 56.0 81.0 60.5 44.5 403 382 55 40 70.5 55.5 80.5 59.5 43.0 393 372 54 39 70.0 54.5 80.0 58.5 42.0 383 362 52 38 69.5 54.0 79.5 57.5 41.0 373 352 51 37 69.0 53.0 79.0 56.5 39.5 363 342 50 36 68.5 52.5 78.5 56.0 38.5 353 332 49 35 68.0 51.5 78.0 55.0 37.0 343 322 48 34 67.5 50.5 77.0 54.0 36.0 334 313 47 33 67.0 50.0 76.5 53.0 35.0 325 305 46 32 66.5 49.0 76.0 52.0 33.5 317 297 44 31 66.0 48.5 75.5 51.5 32.5 309 290 43 30 65.5 47.5 92.0 75.0 50.5 31.5 301 283 42 29 65.0 47.0 91.0 74.5 49.5 30.0 293 276 41 28 64.5 46.0 90.0 74.0 48.5 29.0 285 270 41 27 64.0 45.5 89.0 73.5 47.5 28.0 278 265 40 26 63.5 44.5 88.0 72.5 47.0 26.5 271 260 39 25 63.0 44.0 87.0 72.0 46.0 25.5 264 255 38 24 62.5 43.0 86.0 71.5 45.0 24.0 257 250 37 23 62.0 42.5 84.5 71.0 44.0 23.0 251 245 36 22 61.5 41.5 83.5 70.5 43.0 22.0 246 240 35 21 61.0 41.0 82.5 70.0 42.5 20.5 241 235 35 20 60.5 40.0 81.0 69.5 41.5 19.5 236 230 34 BẢNG 2. Bảng chuyển đổi giá trị độ cứng theo loại vật liệu(Áp dụng cho Vật liệu không được làm cứng và Thép mềm) ROCKWELL(HR) BRINELL B F G E K A 15T 30T 45T HB/5 HB/30 100 82.5 61.5 93.0 82.0 72.0 201 240 99 81.0 61.0 92.5 81.5 71.0 195 234 98 79.0 60.0 81.0 70.0 189 228 97 77.5 59.0 92.0 80.5 69.0 184 222 96 76.0 59.0 80.0 68.0 179 216 95 74.0 58.0 91.5 79.0 67.0 175 210 94 72.5 57.5 78.5 66.0 171 205 93 71.0 57.0 91.0 78.0 65.0 167 200 92 69.0 100.0 56.5 90.5 77.5 64.5 163 195 91 67.5 99.5 56.0 77.0 63.5 160 190 90 66.0 98.5 55.5 90.0 76.0 62.5 157 185 89 64.0 98.0 55.0 89.5 75.5 61.5 154 180 88 62.5 97.0 54.0 75.0 60.5 151 176 87 61.0 96.5 53.5 89.0 74.5 59.5 148 172 86 59.0 95.5 53.0 88.5 74.0 58.5 145 169 85 57.5 94.5 52.5 73.5 58.0 142 165 84 56.0 94.0 52.0 88.0 73.0 57.0 140 162 83 54.0 93.0 51.0 87.5 72.0 56.0 137 159 82 52.5 92.0 50.5 71.5 55.0 135 156 81 51.0 91.0 50.0 87.0 71.0 54.0 133 153 80 49.0 90.5 49.5 86.5 70.0 53.0 130 150 79 47.5 89.5 49.0 69.5 52.0 128 147 78 46.0 88.5 48.5 86.0 69.0 51.0 126 144 77 44.0 88.0 48.0 85.5 68.0 50.0 124 141 76 42.5 87.0 47.0 67.5 49.0 122 139 75 99.5 41.0 86.0 46.5 85.0 67.0 48.5 120 137 74 99.0 39.0 85.0 46.0 66.0 47.5 118 135 73 98.5 37.5 84.5 45.5 84.5 65.5 46.5 116 132 72 98.0 36.0 83.5 45.0 84.0 65.0 45.5 114 130 71 97.5 34.5 100.0 82.5 44.5 64.0 44.5 112 127 70 97.0 32.5 99.5 81.5 44.0 83.5 63.5 43.5 110 125 69 96.0 31.0 99.0 81.0 43.5 83.0 62.5 42.5 109 123 68 95.5 29.5 98.0 80.0 43.0 62.0 41.5 107 121 67 95.0 28.0 97.5 79.0 42.5 82.5 61.5 40.5 106 119 66 94.5 26.5 97.0 78.0 42.0 82.0 60.5 39.5 104 117 65 94.0 25.0 96.0 77.5 60.0 38.5 102 116 64 93.5 23.5 95.5 76.5 41.5 81.5 59.5 37.5 101 114 63 93.0 22.0 95.0 75.5 41.0 81.0 58.5 36.5 99 112 62 92.0 20.5 94.5 74.5 40.5 58.0 35.5 98 110 61 91.5 19.0 93.5 74.0 40.0 80.5 57.0 34.5 96 109 60 91.0 17.5 93.0 73.0 39.5 56.5 33.5 95 107 59 90.5 16.0 92.5 72.0 39.0 80.0 56.0 32.0 94 106 58 90.0 14.5 92.0 71.0 38.5 79.5 55.0 31.0 92 104 57 89.5 13.0 91.0 70.5 38.0 54.5 30.0 91 103 56 89.0 11.5 90.5 69.5 79.0 54.0 29.0 90 101 55 88.0 10.0 90.0 68.5 37.5 78.5 53.0 28.0 89 100 54 87.5 8.5 89.5 68.0 37.0 52.5 27.0 87 53 87.0 7.0 89.0 67.0 36.5 78.0 51.5 26.0 86 52 86.5 5.5 88.0 66.0 36.0 77.5 51.0 25.0 85 51 86.0 4.0 87.5 65.0 35.5 50.5 24.0 84 50 85.5 2.5 87.0 64.5 35.0 77.0 49.5 23.0 83 49 85.0 86.5 63.5 76.5 49.0 22.0 82 48 84.5 85.5 62.5 34.5 48.5 20.5 81 47 84.0 85.0 61.5 34.0 76.0 47.5 19.5 80 46 83.0 84.5 61.0 33.5 75.5 47.0 18.5 45 82.5 84.0 60.0 33.0 46.0 17.5 79 44 82.0 83.5 59.0 32.5 75.0 45.5 16.5 78 43 81.5 82.5 58.0 32.0 74.5 45.0 15.5 77 42 81.0 82.0 57.5 31.5 44.0 14.5 76 41 80.5 81.5 56.5 31.0 74.0 43.5 13.5 75 Máy đo độ cứng kim loạiMáy đo độ cứng kim loại Future-Tech |