在网上看到一个表,其实就是GB/T 1172-1999,硬度和强度可以换算?怎么理解?
序号
洛氏硬度
HRC
洛氏硬度
HRA
表面洛氏硬度
HR15N
表面洛氏硬度
HR30N
表面洛氏硬度
HR45N
维氏硬度
HV
布氏硬度
HB30D[sup]2[/sup]
布氏硬度
d[sub]10[/sub]、2d[sub]5[/sub]、4d[sub]2.5[/sub]mm
抗拉强度σ[sub]b[/sub]MPa
碳钢
抗拉强度σ[sub]b[/sub]MPa
铬钢
抗拉强度σ[sub]b[/sub]MPa
铬钒钢
抗拉强度σ[sub]b[/sub]MPa
铬镍钢
抗拉强度σ[sub]b[/sub]MPa
铬钼钢
抗拉强度σ[sub]b[/sub]MPa
铬镍钼钢
抗拉强度σ[sub]b[/sub]MPa
铬锰硅钢
抗拉强度σ[sub]b[/sub]MPa
超高强度钢
抗拉强度σ[sub]b[/sub]MPa
不锈钢
抗拉强度σ[sub]b[/sub]MPa
不分钢种
41
37.0
78.1
56.7
39.4
347
341
3.30
1200
1153
1171
1148
1144
1176
1161
1153
1163
42
37.5
78.4
57.2
40.0
352
345
3.28
1215
1168
1188
1165
1162
1194
1177
1168
1180
43
38.0
78.7
57.6
40.6
357
350
3.26
1231
1184
1206
1182
1179
1212
1194
1184
1197
44
38.5
79.0
58.1
41.2
362
355
3.24
1246
1199
1225
1200
1197
1231
1211
1193
1200
1214
45
39.0
70.0
79.3
58.6
41.8
367
360
3.21
1263
1216
1243
1219
1216
1250
1228
1218
1216
1232
46
39.5
70.3
79.6
59.0
42.4
372
365
3.19
1279
1232
1262
1238
1235
1270
1246
1243
1233
1250
47
40.0
70.5
79.9
59.5
43.0
377
370
3.17
1296
1249
1282
1257
1254
1290
1264
1267
1250
1268
48
40.5
70.8
80.2
60.0
43.6
382
375
3.15
1213
1267
1302
1277
1274
1310
1283
1291
1268
1287
49
41.0
71.1
80.5
60.4
44.2
388
380
3.13
1331
1284
1322
1298
1294
1331
1302
1315
1286
1307
50
41.5
71.3
80.8
60.9
44.8
393
385
3.11
1348
1303
1343
1319
1315
1353
1322
1339
1305
1327
51
42.0
71.6
81.1
61.3
45.4
399
391
3.09
1367
1322
1364
1340
1336
1375
1342
1362
1325
1347
52
42.5
71.8
81.4
61.8
45.9
405
396
3.07
1386
1341
1385
1362
1357
1397
1362
1385
1345
1368
53
43.0
72.1
81.7
62.3
46.5
411
401
3.05
1405
1361
1407
1385
1379
1420
1384
1409
1366
1389
54
43.5
72.4
82.0
62.7
47.1
417
407
3.03
1425
1382
1429
1408
1402
1443
1405
1432
1387
1411
55
44.0
72.6
82.3
63.2
47.7
423
413
3.01
1445
1403
1452
1431
1425
1467
1427
1455
1410
1434
56
44.5
72.9
82.6
63.6
48.3
429
418
2.99
1466
1426
1475
1455
1448
1491
1450
1478
1433
1457
57
45.0
73.2
82.9
64.1
48.9
436
424
2.97
1488
1448
1498
1480
1472
1516
1474
1502
1457
1480
58
45.5
73.4
83.2
64.6
49.5
443
430
2.95
1510
1472
1522
1505
1497
1541
1498
1526
1482
1504
59
46.0
73.7
83.5
65.0
50.1
449
436
2.93
1533
1497
1547
1531
1522
1567
1522
1550
1508
1529
60
46.5
73.9
83.7
65.5
50.7
456
442
2.91
1556
1522
1572
1557
1547
1593
1547
1575
1535
1555
61
47.0
74.2
84.0
65.9
51.2
463
449
2.89
1581
1549
1597
1584
1573
1620
1573
1600
1563
1581
62
47.5
74.5
84.3
66.4
51.8
470
455
2.87
1606
1576
1623
1612
1599
1648
1600
1625
1592
1608
63
48.0
74.7
84.6
66.8
52.4
478
461
2.85
1631
1605
1649
1640
1626
1676
1627
1652
1623
1635
64
48.5
75.0
84.9
67.3
53.0
485
468
2.83
1658
1635
1675
1669
1654
1704
1654
1679
1655
1663
65
49.0
75.3
85.2
67.7
53.6
493
474
2.81
1686
1666
1702
1698
1682
1733
1683
1707
1688
1692
66
49.5
75.5
85.5
68.2
54.2
501
481
2.79
1714
1698
1730
1728
1710
1762
1712
1735
1723
1722
67
50.0
75.8
85.7
68.6
54.7
509
488
2.77
1744
1731
1758
1758
1739
1793
1742
1765
1759
1753
68
50.5
76.1
86.0
69.1
55.3
417
494
2.75
1767
1787
1790
1769
1823
1773
1795
1785
69
51.0
76.3
86.3
69.5
55.9
525
501
2.73
1803
1816
1821
1799
1854
1804
1827
1817
70
51.5
76.6
86.6
70.0
56.5
534
1841
1845
1854
1830
1886
1836
1860
1851
71
52.0
76.9
86.8
70.4
57.1
543
1881
1875
1887
1861
1918
1870
1894
1885
72
52.5
77.1
87.1
70.9
57.6
551
1906
1920
1893
1951
1903
1930
1921
73
53.0
77.4
87.4
71.3
58.2
561
1937
1955
1925
1985
1938
1967
1957
74
53.5
77.7
87.6
71.8
58.8
570
1968
1990
1974
2005
1995
75
54.0
77.9
87.9
72.2
59.4
579
2000
2025
2010
2045
2034
76
54.5
78.2
87.6
72.6
59.9
589
2033
2061
2048
2087
2074
77
55.0
78.5
88.4
73.1
60.5
599
2066
2098
2086
2131
2115
78
55.5
78.7
88.6
73.5
61.1
609
2177
2157
79
56.0
79.0
88.9
73.9
61.7
620
2224
2201
80
56.5
79.3
89.1
74.4
62.2
631
2274
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