HRC

HRA

HR15N

HR30N

HR45N

HV

洛氏硬度

洛氏硬度

表面洛氏硬度

表面洛氏硬度

表面洛氏硬度

维氏硬度

19.5

68.5

40.3

18.6

223

20

68.8

40.7

19.2

226

20.5

69

41.2

19.8

229

21

69.3

41.7

20.4

231

21.5

69.5

42.2

21

234

44.5

72.9

82.6

63.6

48.3

429

45

73.2

82.9

64.1

48.9

436

45.5

73.4

83.2

64.6

49.5

443

46

73.7

83.5

65

50.1

449

46.5

73.9

83.7

65.5

50.7

456

42

71.6

81.1

61.3

45.4

399

42.5

71.8

81.4

61.8

45.9

405

43

72.1

81.7

62.3

46.5

411

43.5

72.4

82

62.7

47.1

417

44

72.6

82.3

63.2

47.7

423

47

74.2

84

65.9

51.2

463

47.5

74.5

84.3

66.4

51.8

470

48

74.7

84.6

66.8

52.4

478

48.5

75

84.9

67.3

53

485

49

75.3

85.2

67.7

53.6

493

52

76.9

86.8

70.4

57.1

543

52.5

77.1

87.1

70.9

57.6

551

53

77.4

87.4

71.3

58.2

561

53.5

77.7

87.6

71.8

58.8

570

54

77.9

87.9

72.2

59.4

579

49.5

75.5

85.5

68.2

54.2

501

50

75.8

85.7

68.6

54.7

509

50.5

76.1

86

69.1

55.3

417

51

76.3

86.3

69.5

55.9

525

51.5

76.6

86.6

70

56.5

534

59.5

80.9

90.4

76.9

65.6

700

60

81.2

90.6

77.3

66.2

713

60.5

81.4

90.8

77.7

66.8

726

61

81.7

91

78.1

67.3

739

61.5

82

91.2

78.6

67.9

752

57

79.5

89.4

74.8

62.8

642

57.5

79.8

89.6

75.2

63.4

653

58

80.1

89.8

75.6

63.9

664

58.5

80.3

90

76.1

64.5

676

59

80.6

90.2

76.5

65.1

688

54.5

78.2

87.6

72.6

59.9

589

55

78.5

88.4

73.1

60.5

599

55.5

78.7

88.6

73.5

61.1

609

56

79

88.9

73.9

61.7

620

56.5

79.3

89.1

74.4

62.2

631

64.5

83.6

92.1

81

71.2

840

65

83.9

92.2

81.3

71.7

856

65.5

84.1

872

KLQD=抗拉强度 bMPa

σ