Brinell (布氏) Rockwell C (洛氏 C) 150 kgf Diamond (钻石) HRC 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 Vickers Hardness (硬度) HV 940 900 865 832 800 772 746 720 697 674 653 633 613 595 577 560 544 528 513 498 3000 kgf 10 mm Ball(球)

硬度换算表 (以 HRC 硬度为基准) 1 Rockwell Hardness Rockwell Superficial Hardness (洛氏硬度) (罗克韦尔表面硬度) Rockwell A Rockwell B Rockwell D (洛氏 A) (洛氏 B) (洛氏 D) 60 kgf Diamond(钻石)

100 kgf 1//16" ball(1//16 球)

100 kgf Diamond(钻石)

15 kgf(1/16 球)

30 kgf(1/16 球)

45 kgf(1/16 球)

Approximate Rockwell C 近似 (洛氏 C) Tensile 150 kgf(拉伸) (强度)

1/16" ball 1/16" ball 1/16" ball HR15N 93.2 92.9 92.5 92.2 91.8 91.4 91.1 90.7 90.2 89.8 89.3 88.9 88.3 87.9 87.4 86.9 86.4 85.9 85.5 85.0 HR30N 84.4 83.6 82.8 81.9 81.1 80.1 79.3 78.4 77.5 76.6 75.7 74.8 73.9 73.0 72.0 71.2 70.2 69.4 68.5 67.6 HR45N 75.4 74.2 73.3 72.0 71.0 69.9 68.8 67.7 66.6 65.5 64.3 63.2 62.0 60.9 59.8 58.6 57.4 56.1 55.0 53.8

Strength ksi (MPa) --------------------------2075 2015 1950 1880 1820 1760 1695

Diamond(钻石)

HB ------739 722 705 688 670 654 634 615 595 577 560 543 525 512 496 481 469

HRA 85.6 85.0 84.5 83.9 83.4 82.8 82.3 81.8 81.2 80.7 80.1 79.6 79.0 78.5 78.0 77.4 76.8 76.3 75.9 75.2

HRB -----------------------------------------

HRD 76.9 76.1 75.4 74.5 73.8 73.0 72.2 71.5 70.7 69.9 69.2 68.5 67.7 66.9 66.1 65.4 64.6 63.8 63.1 62.1

HRC 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49

硬度换算表 (以HRC硬度为基准) 2

硬度换算表 (以HRC硬度为基准) 3