As a manufacturer or engineer, understanding the hardness and strength of different metal alloys is crucial for selecting the right material for your project. In this blog post, we dive into the world of copper alloys, specifically brass and beryllium bronze, and provide a comprehensive conversion chart of their hardness and tensile strength values.
Related reading: Hardness Conversion Chart: HLD, HRC, HRB, HV, HB, HSD
Whether you’re a seasoned professional or just starting out in the industry, this information is a valuable resource that you won’t want to miss.
So, let’s get started!
Copper Alloy Hardness and Strength Conversion Values
(Excerpt from GB/T3771-1983)
Table 1
| Hardness | Tensile strength /MPa | ||||||||
| Brinell | Vickers | Rockwell | Surface Rockwell | Brass | |||||
| HB30D2 | d10,2d5,4d2.5 /mm | HV | HRB | HRF | HR15T | HR30T | HR45T | Plate | Rod |
| σb | σb | ||||||||
| 90.0 | 6.159 | 90.5 | 53.7 | 87.1 | 77.2 | 50.8 | 26.7 | — | — |
| 92.0 | 6.100 | 92.6 | 54.2 | 87.4 | 77.4 | 51.2 | 27.2 | — | — |
| 94.0 | 6.042 | 94.7 | 54.8 | 87.7 | 77.6 | 51.6 | 27.7 | — | — |
| 96.0 | 5.986 | 96.8 | 55.5 | 88.1 | 77.8 | 52.0 | 28.4 | — | — |
| 98.0 | 5.931 | 98.9 | 56.2 | 88.5 | 78.0 | 52.5 | 29.1 | — | — |
| 100.0 | 5.878 | 101.0 | 57.1 | 89.1 | 78.3 | 53.2 | 30.1 | — | — |
| 102.0 | 5.826 | 103.1 | 58.0 | 89.6 | 78.6 | 53.8 | 31.0 | — | — |
| 104.0 | 5.775 | 105.1 | 58.9 | 90.1 | 78.9 | 54.4 | 31.9 | — | — |
| 106.0 | 5.726 | 107.2 | 60.0 | 90.7 | 79.2 | 55.1 | 32.9 | — | — |
| 108.0 | 5.678 | 109.3 | 61.0 | 91.3 | 79.6 | 55.8 | 33.9 | — | — |
| 110.0 | 5.631 | 111.4 | 62.1 | 91.9 | 79.9 | 56.5 | 35.0 | 379 | 392 |
| 112.0 | 5.585 | 113.5 | 63.2 | 92.6 | 80.3 | 574 | 36.2 | 382 | 397 |
| 114.0 | 5.541 | 115.6 | 64.3 | 93.2 | 80.6 | 58.1 | 37.2 | 386 | 403 |
| 116.0 | 5.497 | 117.7 | 65.4 | 93.8 | 81.0 | 58.8 | 38.2 | 390 | 408 |
| 118.0 | 5.454 | 119.8 | 66.6 | 94.5 | 81.4 | 59.6 | 39.4 | 394 | 414 |
| 120.0 | 5.413 | 121.9 | 67.7 | 95.1 | 84.7 | 60.3 | 40.5 | 398 | 420 |
| 122.0 | 5.372 | 124.0 | 68.8 | 95.8 | 82.1 | 61.2 | 41.7 | 402 | 425 |
| 124.0 | 5.332 | 126.1 | 69.9 | 96.4 | 82.5 | 61.9 | 42.7 | 407 | 431 |
| 126.0 | 5.293 | 128.2 | 71.0 | 97.0 | 82.8 | 62.6 | 43.7 | 412 | 437 |
| 128.0 | 5.255 | 130.3 | 72.1 | 97.7 | 83.2 | 63.4 | 4.9 | 417 | 443 |
| 130.0 | 5.218 | 132.4 | 73.1 | 98.2 | 83.5 | 64.0 | 45.8 | 422 | 449 |
| 132.0 | 5.181 | 134.5 | 74.1 | 98.8 | 83.8 | 64.7 | 46.8 | 428 | 456 |
| 134.0 | 5.145 | 136.6 | 75.1 | 99.4 | 84.1 | 65.5 | 47.9 | 434 | 462 |
| 136.0 | 5.110 | 138.6 | 76.1 | 100.0 | 84.5 | 66.2 | 48.9 | 440 | 468 |
| 138.0 | 5.076 | 140.7 | 77.0 | 100.5 | 84.8 | 66.8 | 49.8 | 446 | 475 |
| 140.0 | 5.042 | 142.8 | 77.9 | 101.0 | 85.0 | 67.4 | 50.6 | 453 | 481 |
| 142.0 | 5.009 | 144.9 | 78.8 | 101.5 | 85.3 | 67.9 | 51.5 | 460 | 488 |
| 144.0 | 4.977 | 147.0 | 79.7 | 102.0 | 85.6 | 68.5 | 52.3 | 467 | 495 |
| 146.0 | 4.945 | 149.1 | 80.5 | 102.5 | 85.8 | 69.1 | 53.2 | 474 | 502 |
| 148.0 | 4.914 | 151.2 | 81.2 | 102.9 | 86.1 | 69.6 | 53.9 | 482 | 509 |
| 150.0 | 4.883 | 153.3 | 82.0 | 103.3 | 86.3 | 70.1 | 54.6 | 489 | 516 |
| 152.0 | 4.853 | 155.4 | 82.7 | 103.7 | 86.6 | 70.6 | 55.3 | 498 | 523 |
| 154.0 | 4.823 | 157.5 | 83.3 | 104.1 | 86.8 | 71.0 | 56.0 | 506 | 530 |
| 156.0 | 4.794 | 159.6 | 84.0 | 104.5 | 87.0 | 71.5 | 56.6 | 514 | 537 |
| 158.0 | 4.766 | 161.7 | 84.6 | 104.8 | 87.2 | 71.9 | 57.2 | 523 | 545 |
| 160.0 | 4.738 | 163.8 | 85.2 | 105.2 | 87.4 | 72.3 | 57.9 | 532 | 552 |
| 162.0 | 4.710 | 165.9 | 85.7 | 105.5 | 87.6 | 72.7 | 58.4 | 541 | 560 |
| 164.0 | 4.683 | 168.0 | 86.3 | 105.8 | 87.7 | 73.1 | 58.9 | 551 | 567 |
| 166.0 | 4.657 | 170.1 | 86.8 | 106.1 | 87.9 | 73.4 | 59.4 | 561 | 575 |
| 168.0 | 4.631 | 172.1 | 87.4 | 106.4 | 88.1 | 73.8 | 59.9 | 571 | 583 |
Table 2
| Hardness | Tensile Strength /MPa | ||||||||||||||
| Brinell | Vickers | Rockwell | Surface Rockwell | Brass | Beryllium Bronze | ||||||||||
| HB30D2 | d10、2d5、4d2.5/mm | HV | HRB | HRF | HR15T | HR30T | HR45T | Plate | Rod | Plate | Rod | ||||
| σb | σb | σb | σ0.2 | σ0.01 | σb | σ0.2 | σ0.01 | ||||||||
| 170.0 | 4.605 | 174.2 | 87.9 | 106.7 | 88.2 | 74.1 | 60.4 | 581 | 591 | 556 | 476 | 332 | 662 | 374 | 291 |
| 172.0 | 4.580 | 176.3 | 88.4 | 107.0 | 88.4 | 74.5 | 61.0 | 591 | 599 | 562 | 482 | 337 | 667 | 382 | 297 |
| 174.0 | 4.555 | 178.4 | 88.8 | 107.2 | 88.5 | 74.7 | 61.3 | 602 | 607 | 569 | 489 | 342 | 673 | 390 | 303 |
| 176.0 | 4.530 | 180.5 | 89.3 | 107.5 | 88.7 | 75.1 | 61.8 | 613 | 615 | 576 | 496 | 347 | 678 | 398 | 09 |
| 178.0 | 4.506 | 182.6 | 89.8 | 107.8 | 89.8 | 75.4 | 62.3 | 624 | 624 | 582 | 503 | 352 | 683 | 406 | 314 |
| 180.0 | 4.483 | 184.7 | 90.3 | 108.1 | 89.0 | 75.8 | 62.8 | 636 | 632 | 589 | 509 | 356 | 689 | 414 | 320 |
| 182.0 | 4.459 | 186.8 | 90.8 | 108.4 | 89.2 | 76.1 | 63.4 | 648 | 640 | 596 | 516 | 361 | 694 | 422 | 326 |
| 184.0 | 4.436 | 188.9 | 91.3 | 108.7 | 89.4 | 76.5 | 63.9 | 659 | 649 | 603 | 523 | 366 | 700 | 430 | 332 |
| 186.0 | 4.414 | 191.0 | 91.8 | 109.0 | 89.5 | 76.9 | 64.4 | 672 | 658 | 609 | 530 | 371 | 705 | 438 | 337 |
| 188.0 | 4.392 | 193.1 | 92.3 | 109.2 | 89.7 | 77.1 | 64.7 | 684 | 666 | 616 | 537 | 376 | 711 | 446 | 343 |
| 190.0 | 4.370 | 195.2 | 92.8 | 109.5 | 89.8 | 77.5 | 65.3 | 697 | 675 | 623 | 543 | 380 | 717 | 454 | 349 |
| 192.0 | 4.348 | 197.3 | 93.3 | 109.8 | 90.0 | 77.8 | 65.8 | 710 | 684 | 630 | 550 | 385 | 722 | 462 | 355 |
| 194.0 | 4.327 | 199.4 | 93.9 | 110.2 | 90.2 | 78.3 | 66.5 | 723 | 693 | 637 | 557 | 390 | 728 | 470 | 360 |
| 196.0 | 4.306 | 201.5 | 94.4 | 110.4 | 90.3 | 78.5 | 66.8 | 736 | 702 | 643 | 564 | 395 | 734 | 478 | 366 |
| 198.0 | 4.285 | 203.5 | 95.0 | 110.8 | 90.6 | 79.0 | 67.5 | 750 | 712 | 650 | 570 | 400 | 740 | 486 | 372 |
| 200.0 | 4.265 | 205.6 | 95.6 | 111.1 | 90.7 | 79.4 | 68.0 | 764 | 721 | 657 | 577 | 404 | 746 | 494 | 378 |
| 202.0 | 4.244 | 207.7 | 95.3 | 111.5 | 90.9 | 79.8 | 68.7 | — | — | 664 | 584 | 409 | 752 | 502 | 383 |
| 204.0 | 4.225 | 209.8 | 95.8 | 111.8 | 91.2 | 80.2 | 69.2 | — | — | 671 | 591 | 414 | 758 | 510 | 389 |
| 206.0 | 4.205 | 211.9 | 97.5 | 112.2 | 91.4 | 80.7 | 69.9 | — | — | 678 | 598 | 419 | 764 | 518 | 395 |
| 208.0 | 4.186 | 214.0 | 98.1 | 112.6 | 91.6 | 81.1 | 70.6 | — | — | 685 | 604 | 424 | 770 | 526 | 401 |
| 210.0 | 4.167 | 216.1 | 98.8 | 113.0 | 91.8 | 81.6 | 71.3 | — | — | 692 | 611 | 428 | 776 | 534 | 406 |
| Hardness | Tensile Strength /MPa | ||||||||||||
| Brinell | Vickers | Rockwell | Surface Rockwell | Beryllium Bronze | |||||||||
| HB30D2 | d10,2d5,4d2.5 /mm | HV | HRC | HRA | HR15N | HR30N | HR45N | Plate | Rod | ||||
| σb | σ0.2 | σ0.01 | σb | σ0.2 | σ0.01 | ||||||||
| 212.0 | 4.148 | 218.2 | 18.0 | 59.2 | 69.7 | 38.9 | 17.3 | 699 | 618 | 433 | 782 | 542 | 412 |
| 214.0 | 4.129 | 220.3 | 18.4 | 59.4 | 68.2 | 39.2 | 17.8 | 706 | 625 | 438 | 789 | 550 | 418 |
| 216.0 | 4.111 | 222.4 | 18.8 | 59.6 | 68.4 | 39.6 | 18.3 | 713 | 631 | 443 | 795 | 558 | 424 |
| 218.0 | 4.093 | 224.5 | 19.1 | 59.8 | 68.5 | 39.9 | 18.6 | 720 | 638 | 447 | 801 | 566 | 429 |
| 220.0 | 4.075 | 226.6 | 19.5 | 60.0 | 68.8 | 40.3 | 19.1 | 727 | 645 | 452 | 808 | 574 | 435 |
| 288.0 | 3.581 | 297.8 | 30.7 | 65.7 | 75.1 | 50.9 | 32.1 | 973 | 875 | 615 | 1047 | 845 | 631 |
| 290.0 | 3.569 | 299.9 | 31.0 | 65.8 | 75.2 | 51.2 | 32.5 | 980 | 882 | 620 | 1054 | 852 | 637 |
| 292.0 | 3.557 | 301.9 | 31.2 | 65.9 | 75.4 | 51.4 | 32.7 | 988 | 889 | 625 | 1062 | 860 | 642 |
| 294.0 | 3.545 | 304.0 | 31.5 | 66.1 | 75.5 | 51.7 | 33.1 | 995 | 896 | 630 | 1070 | 868 | 648 |
| 296.0 | 3.534 | 306.1 | 31.8 | 66.2 | 75.7 | 51.9 | 33.4 | 1003 | 902 | 634 | 1077 | 876 | 654 |
| 298.0 | 3.522 | 308.2 | 32.1 | 66.4 | 75.9 | 52.2 | 33.8 | 1010 | 909 | 639 | 1085 | 884 | 660 |
| 300.0 | 3.511 | 310.3 | 32.4 | 66.5 | 76.0 | 52.5 | 34.1 | 1018 | 916 | 644 | 1093 | 892 | 665 |
| 302.0 | 3.500 | 312.4 | 32.7 | 66.7 | 76.2 | 52.8 | 34.4 | 1026 | 923 | 649 | 1100 | 900 | 671 |
| 304.0 | 3.489 | 314.5 | 33.0 | 66.9 | 76.4 | 53.1 | 34.8 | 1033 | 929 | 654 | 1108 | 908 | 677 |
| 306.0 | 3.478 | 316.6 | 33.2 | 67.0 | 76.5 | 53.3 | 35.0 | 1041 | 936 | 658 | 1116 | 916 | 683 |
| 308.0 | 3.467 | 318.7 | 33.5 | 67.1 | 76.7 | 53.6 | 35.4 | 1048 | 943 | 663 | 1124 | 924 | 688 |
| 310.0 | 3.456 | 320.8 | 33.8 | 67.3 | 76.8 | 53.8 | 35.7 | 1056 | 950 | 668 | 1131 | 932 | 694 |
| 312.0 | 3.445 | 322.9 | 34.1 | 67.4 | 77.0 | 54.1 | 36.1 | 1064 | 957 | 673 | 1139 | 940 | 700 |
| 314.0 | 3.434 | 325.0 | 34.3 | 67.5 | 77.1 | 54.3 | 36.3 | 1071 | 963 | 677 | 1147 | 948 | 706 |
| 316.0 | 3.424 | 327.1 | 34.6 | 67.7 | 77.3 | 54.6 | 36.7 | 1079 | 970 | 682 | 1155 | 956 | 711 |
| 318.0 | 3.413 | 329.2 | 34.9 | 67.8 | 77.4 | 54.9 | 7.0 | 1087 | 977 | 687 | 1163 | 964 | 717 |
| 320.0 | 3.403 | 331.3 | 35.2 | 68.0 | 77.6 | 55.2 | 37.4 | 1094 | 984 | 692 | 1171 | 972 | 723 |
| 322.0 | 3.393 | 333.4 | 35.4 | 68.1 | 77.7 | 55.4 | 37.6 | 1102 | 990 | 697 | 1179 | 980 | 729 |
| 324.0 | 3.383 | 335.4 | 35.7 | 68.2 | 77.9 | 55.6 | 38.0 | 1110 | 997 | 701 | 1187 | 988 | 734 |
| 326.0 | 3.372 | 337.5 | 36.0 | 68.4 | 78.1 | 55.9 | 38.3 | 1117 | 1004 | 706 | 1195 | 996 | 740 |
| 328.0 | 3.636 | 339.6 | 36.2 | 68.5 | 78.2 | 56.1 | 38.5 | 1125 | 1011 | 711 | 1203 | 1004 | 746 |
| 330.0 | 3.353 | 341.7 | 36.5 | 68.6 | 78.3 | 56.4 | 38.9 | 1133 | 1018 | 716 | 1210 | 1012 | 752 |
| 332.0 | 3.343 | 343.8 | 36.7 | 68.7 | 78.5 | 56.6 | 39.1 | 1141 | 1024 | 721 | 1218 | 1020 | 757 |
| 334.0 | 3.333 | 345.9 | 37.0 | 68.9 | 78.6 | 56.9 | 39.5 | 1149 | 1031 | 725 | 1227 | 1028 | 763 |
| 336.0 | 3.323 | 348.0 | 37.3 | 69.0 | 78.8 | 57.1 | 39.8 | 1156 | 1038 | 730 | 1235 | 1036 | 769 |
| 338.0 | 3.314 | 350.1 | 37.5 | 69.1 | 78.9 | 57.3 | 40.1 | 1164 | 1045 | 735 | 1243 | 1044 | 775 |
| 340.0 | 3.304 | 352.2 | 37.8 | 69.3 | 79.1 | 57.6 | 40.4 | 1172 | 1051 | 740 | 1251 | 1052 | 780 |
| 342.0 | 3.295 | 354.3 | 38.0 | 69.4 | 79.2 | 57.8 | 40.6 | 1180 | 1058 | 745 | 1259 | 1060 | 786 |
| 344.0 | 3.286 | 36.4 | 38.3 | 69.5 | 79.3 | 58.1 | 41.0 | 1188 | 1065 | 749 | 1267 | 1068 | 792 |
| 346.0 | 3.276 | 358.5 | 38.5 | 69.7 | 79.5 | 58.3 | 41.2 | 1196 | 1072 | 754 | 1275 | 1076 | 798 |
| 348.0 | 3.267 | 360.6 | 38.8 | 69.8 | 79.6 | 58.6 | 41.6 | 1204 | 1079 | 759 | 1283 | 1084 | 803 |
| 350.0 | 3.258 | 362.7 | 39.0 | 69.9 | 79.8 | 58.8 | 41.8 | 1211 | 1085 | 764 | 1291 | 1091 | 809 |
| 352.0 | 3.249 | 364.8 | 39.3 | 70.1 | 79.9 | 59.0 | 42.2 | 1219 | 1092 | 769 | 1299 | 1099 | 815 |
| 354.0 | 3.240 | 366.9 | 39.5 | 70.2 | 80.1 | 59.2 | 42.4 | 1227 | 1099 | 773 | 1307 | 1107 | 821 |
| 356.0 | 3.231 | 368.9 | 39.9 | 70.4 | 80.2 | 59.6 | 42.9 | 1235 | 1106 | 778 | 1316 | 1115 | 826 |
| 358.0 | 3.223 | 371.0 | 40.2 | 70.5 | 80.4 | 59.9 | 43.2 | 1243 | 1112 | 783 | 1324 | 1123 | 832 |
| 360.0 | 3.214 | 373.1 | 40.4 | 70.6 | 80.5 | 60.1 | 43.4 | 1251 | 1119 | 788 | 1332 | 1131 | 838 |
| 362.0 | 3.205 | 375.2 | 40.6 | 70.7 | 80.7 | 60.3 | 43.7 | 1259 | 1126 | 792 | 1340 | 1139 | 844 |
| 364.0 | 3.197 | 377.3 | 40.9 | 70.9 | 80.8 | 60.6 | 44.0 | 1267 | 1133 | 797 | 1348 | 1147 | 849 |
| 366.0 | 3.188 | 379.4 | 41.1 | 71.0 | 80.9 | 60.8 | 44.2 | 1275 | 1139 | 802 | 1356 | 1155 | 855 |
| 368.0 | 3.180 | 381.5 | 41.3 | 71.1 | 81.0 | 60.9 | 44.5 | 1283 | 1146 | 807 | 1365 | 1163 | 864 |
| 370.0 | 3.171 | 383.6 | 41.5 | 71.2 | 81.1 | 61.1 | 44.7 | 1294 | 1153 | 812 | 1373 | 1171 | 867 |
| 372.0 | 3.163 | 385.7 | 41.7 | 71.3 | 81.3 | 61.3 | 44.9 | 1299 | 1160 | 816 | 1381 | 1179 | 872 |
| 374.0 | 3.155 | 387.8 | 42.0 | 71.4 | 81.4 | 61.6 | 45.3 | 1307 | 1167 | 821 | 1389 | 1187 | 878 |
| 376.0 | 3.147 | 389.9 | 42.2 | 71.5 | 81.5 | 61.8 | 45.5 | 1315 | 1173 | 826 | 1397 | 1195 | 884 |
| 378.0 | 3.138 | 392.0 | 42.4 | 71.6 | 81.7 | 62.0 | 45.8 | 1324 | 1180 | 831 | 1406 | 1203 | 890 |
| 380.0 | 3.130 | 394.1 | 42.7 | 71.8 | 81.8 | 62.3 | 46.1 | 1332 | 1187 | 836 | 1414 | 1211 | 895 |
| 382.0 | 3.122 | 396.2 | 42.9 | 71.9 | 81.9 | 62.5 | 46.3 | 1340 | 1194 | 840 | 1422 | — | — |
| 384.0 | 3.114 | 398.3 | 43.2 | 72.0 | 82.1 | 62.7 | 46.7 | 1348 | 1200 | 845 | 1430 | — | — |
| 386.0 | 3.107 | 400.3 | 43.4 | 72.1 | 82.2 | 62.9 | 46.9 | 1356 | 1207 | 850 | 1438 | — | — |
| 388.0 | 3.099 | 402.4 | 43.6 | 72.2 | 82.3 | 63.1 | 47.2 | 1364 | 1214 | 855 | 1447 | — | — |
| 390.0 | 3.091 | 404.5 | 43.9 | 72.4 | 82.5 | 63.4 | 47.5 | 1372 | 1221 | 860 | 1455 | — | — |
| 392.0 | 3.083 | 406.6 | 44.1 | 72.5 | 82.6 | 63.6 | 47.7 | 1381 | 1228 | 864 | 1463 | — | — |
| 394.0 | 3.076 | 408.7 | 44.3 | 72.6 | 82.7 | 63.8 | 48.0 | 1389 | 1234 | 869 | 1471 | — | — |
| 396.0 | 3.068 | 410.8 | 44.6 | 72.8 | 82.9 | 64.1 | 48.3 | 1397 | 1241 | 874 | 1480 | — | — |
| 398.0 | 3.061 | 412.9 | 44.8 | 72.9 | 83.0 | 64.3 | 48.6 | 1405 | 1248 | 879 | 1488 | — | — |
| 400.0 | 3.053 | 415.0 | 45.0 | 73.0 | 83.1 | 64.4 | 48.8 | 1413 | 1255 | 884 | 1496 | — | — |
| 402.0 | 3.046 | 417.1 | 45.3 | 73.1 | 83.3 | 64.7 | 49.1 | 1422 | — | — | 1504 | — | — |
| 404.0 | 3.038 | 419.2 | 45.5 | 73.2 | 83.4 | 64.9 | 49.4 | 1430 | — | — | 1512 | — | — |
| 406.0 | 3.031 | 421.3 | 45.7 | 73.3 | 83.5 | 65.1 | 49.6 | 1438 | — | — | 1521 | — | — |
| 408.0 | 3.024 | 423.4 | 45.9 | 73.4 | 83.6 | 65.3 | 49.8 | 1447 | — | — | 1529 | — | — |
| 410.0 | 3.017 | 425.5 | 46.2 | 73.6 | 83.8 | 65.6 | 50.2 | 1455 | — | — | 1537 | — | — |
| 412.0 | 3.009 | 427.6 | 46.4 | 73.7 | 83.9 | 65.8 | 50.4 | 1463 | — | — | 1545 | — | — |
| 414.0 | 3.002 | 429.7 | 46.6 | 73.8 | 84.0 | 66.0 | 50.7 | 1472 | — | — | 1553 | — | — |
| 416.0 | 2.995 | 431.8 | 4.8 | 73.9 | 84.1 | 66.2 | 50.9 | 1480 | — | — | 1562 | — | — |
| 418.0 | 2.988 | 433.8 | 47.0 | 74.0 | 84.3 | 66.4 | 51.1 | 1488 | — | — | 1570 | — | — |
| 420.0 | 2.981 | 435.9 | 47.3 | 74.1 | 84.4 | 66.6 | 51.5 | 1497 | — | — | 1578 | — | — |
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