Miki Pulley COUPLINGS, Руководство пользователя

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113
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Rockwell
C scale
hardness
(HRC)
Vickers
hardness
(HV)
Brinell hardness (HB)
10mm sphere
Load 3000kgf
Rockwell hardness
Rockwell superficial hardness
Diamond conical penetrator
Shore
hardness
(HS)
Tensile
strength
[MPa]
Approximate
value)
1MPa=
1N/mm
2
Rockwell
C scale
hardness
(HRC)
Standard
sphere
Tungsten
carbide
sphere
A scale (HRA)
Load 60kgf
Diamond
conical
penetrator
B scale (HRB)
Load 100kgf
Diameter
1.6mm (1/16in)
sphere
D scale (HRD)
Load 100kgf
Diamond
conical
penetrator
15-N scale
Load 15kgf
30-N scale
Load 30kgf
45-N scale
Load 45kgf
68 940
– –
85.6
–
76.9 93.2 84.4 75.4
97 –
68
67 900
– –
85.0
–
76.1 92.9 83.6 74.2
95 –
67
66 865
– –
84.5
–
75.4 92.5 82.8 73.3
92 –
66
65 832 – (739) 83.9 – 74.5 92.2 81.9 72.0 91 – 65
64 800 – (722) 83.4 – 73.8 91.8 81.1 71.0 88 – 64
63 772
– (705)
82.8
–
73.0 91.4 80.1 69.9
87 –
63
62 746 – (688) 82.3 – 72.2 91.1 79.3 68.8 85 – 62
61 720 – (670) 81.8 – 71.5 90.7 78.4 67.7 83 – 61
60 697 – (654) 81.2 – 70.7 90.2 77.5 66.6 81 – 60
59 674 – (634) 80.7 – 69.9 89.8 56.6 65.5 80 – 59
58 653 – 615 80.1 – 69.2 89.3 75.7 64.3 78 – 58
57 633 – 595 79.6 – 68.5 88.9 74.8 63.2 76 – 57
56 613 – 577 79.0 – 67.7 88.3 73.9 62.0 75 – 56
55 595
–
560 78.5
–
66.9 87.9 73.0 60.9
74 2075
55
54 577
–
543 78.0
–
66.1 87.4 72.0 59.8
72 2015
54
53 560 – 525 77.4 – 65.4 86.9 71.2 58.5 71 1950 53
52 544
(500)
512 76.8
–
64.6 86.4 70.2 57.4
69 1880
52
51 528
(487)
496 76.3
–
63.8 85.9 69.4 56.1
68 1820
51
50 513
(475)
481 75.9
–
63.1 85.5 68.5 55.0
67 1760
50
49 498
(464)
469 75.2
–
62.1 85.0 67.6 53.8
66 1695
49
48 484 451 455 74.7
–
61.4 84.5 66.7 52.5
64 1635
48
47 471 442 443 74.1
–
60.8 83.9 65.8 51.4
63 1580
47
46 458 432 432 73.6
–
60.0 83.5 64.8 50.3
62 1530
46
45 446 421 421 73.1
–
59.2 83.0 64.0 49.0
60 1480
45
44 434 409 409 72.5 – 58.5 82.5 63.1 47.8 58 1435 44
43 423 400 400 72.0
–
57.7 82.0 62.2 46.7
57 1385
43
42 412 390 390 71.5
–
56.9 81.5 61.3 45.5
56 1340
42
41 402 381 381 70.9
–
56.2 80.9 60.4 44.3
55 1295
41
40 392 371 371 70.4 – 55.4 80.4 59.5 43.1 54 1250 40
39 382 362 362 69.9 – 54.6 79.9 58.6 41.9 52 1215 39
38 372 353 353 69.4
–
53.8 79.4 57.7 40.8
51 1180
38
37 363 344 344 68.9 – 53.1 78.8 56.8 39.6 50 1160 37
36 354 336 336 68.4 (109.0) 52.3 78.3 55.9 38.4 49 1115 36
35 345 327 327 67.9 (108.5) 51.5 77.7 55.0 37.2 48 1080 35
34 336 319 319 67.4
(108.0)
50.8 77.2 54.2 36.1
47 1055
34
33 327 311 311 66.8 (107.5) 50.0 76.6 53.3 34.9 46 1025 33
32 318 301 301 66.3 (107.0) 49.2 76.1 52.1 33.7 44 1000 32
31 310 294 294 65.8
(106.0)
48.4 75.6 51.3 32.7
43 980
31
30 302 286 286 65.3
(105.5)
47.7 75.0 50.4 31.3
42 950
30
29 294 279 279 64.7
(104.5)
47.0 74.5 49.5 30.1
41 930
29
28 286 271 271 64.3
(104.0)
46.1 73.9 48.6 28.9
41 910
28
27 279 264 264 63.8
(103.0)
45.2 73.3 47.7 27.8
40 880
27
26 272 258 258 63.3
(102.5)
44.6 72.8 46.8 26.7
38 860
26
25 266 253 253 62.8
(101.5)
43.8 72.2 45.9 25.5
38 840
25
24 260 247 247 62.4
(101.0)
43.1 71.6 45.0 24.3
37 825
24
23 254 243 243 62.0
100.0
42.1 71.0 44.0 23.1
36 805
23
22 248 237 237 61.5
99.0
41.6 70.5 43.2 22.0
35 785
22
21 243 231 231 61.0
98.5
40.9 69.9 42.3 20.7
35 770
21
20 238 226 226 60.5
97.8
40.1 69.4 41.5 19.6
34 760
20
(18) 230 219 219 – 96.7 – – – – 33 730 (18)
(16) 222 212 212 – 95.5 – – – – 32 705 (16)
(14) 213 203 203 – 93.9 – – – – 31 675 (14)
(12) 204 194 194 – 92.3 – – – – 29 650 (12)
(10) 196 187 187 – 90.7 – – – – 28 620 (10)
(8) 188 179 179 – 89.5 – – – – 27 600 (8)
(6) 180 171 171 – 87.1 – – – – 26 580 (6)
(4) 173 165 165 – 85.5 – – – – 25 550 (4)
(2) 166 158 158 – 83.5 – – – – 24 530 (2)
(0) 160 152 152 – 81.7 – – – – 24 515 (0)
* Boldface figures are derived from ASTM E 140. (Adjusted jointly by SAE, ASM and ASTM)
* The figures in parentheses ( ) in the table are the ranges that are not frequently used and are shown for reference purposes only.
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Approximate Converted Values of Steels to Rockwell Hardness of C Scale