熱 處 理 硬 度 關 係 換 算 表
HRA HRC 85.6 85.3 85.0 84.7 84.4 84.1 83.8 83.4 83.0 82.6 82.2 81.8 80.8 80.6 80.3 80.0 79.8 HL 874 868 864 854 850 849 844 838 832 826 820 812 79.6 792 788 783 779 HV 940 920 900 880 860 840 820 800 780 760 740 720 680 670 660 650 640 HB HS HRA HRC HL 775 770 766 761 757 752 748 742 736 732 726 722 710 704 693 680 668 HV 630 620 610 600 590 580 570 560 550 540 530 520 500 490 470 450 430 HB 505 496 488 480 465 456 441 425 405 HS HRA HRB HRC HL HV HB HS 68.0 67.5 67.0 65.9 65.4 65.3 64.7 64.0 63.3 62.5 61.8 61.0 59.2 58.8 58.3 57.8 57.3 97.6 79.5 56.8 96.4 79.2 56.3 95.2 78.9 55.7 94.0 78.6 55.2 92.8 78.4 54.7 91.5 78.0 54.1 90.2 77.8 53.6 88.9 77.4 53.0 87.5 77.0 52.3 86.2 76.7 51.7 84.8 76.4 51.1 83.3 76.1 50.5 80.3 75.3 49.1 79.6 74.9 48.4 78.8 74.1 46.9 78.0 73.3 45.3 77.2 72.3 43.6 76.4 70.8 40.8 646 400 379 54.8 75.6 69.8 110.0 38.8 632 380 360 52.6 74.7 68.7 109.0 36.6 617 360 341 50.4 73.9 67.6 108.0 34.4 602 340 322 48.1 73.1 66.4 107.0 32.2 586 320 303 45.8 72.2 65.2 105.5 29.8 570 300 284 43.4 71.3 64.5 104.5 28.5 562 290 275 42.2 70.4 63.8 103.5 27.1 553 280 265 40.9 69.6 63.1 102.0 25.6 544 270 256 39.7 68.7 62.7 24.8 538 265 252 39.0 67.7 62.4 101.0 24.0 534 260 247 38.4 66.8 62.0 64.9 61.2 23.1 528 255 243 37.8 21.3 518 245 233 36.5 64.0 60.7 98.1 20.3 512 240 228 35.9 62.0 60.0 58.0 96.7 18.0 91.5 11.0 89.5 8.5 230 219 34.1 200 190 30.4 190 181 29.0
热处理硬度换算表
