284 276 269 261 253
64.1 63.6 63.0 62.5 61.8
235 229 223 217 212
235 229 223 217 212
247 241 234 228 222
61.4 60.8
-
207
207
218
-
201
201
212
-
197
197
207
-
192
192
202
-
76.5
96
-
76.1
95
-
75.7
93
-
75.3
92
-
-
(745) 840
84.1
-
65.3
74.8
91
-
-
(733) 820
83.8
-
64.7
74.3
90
-
-
(722) 800
83.4
-
64.0
73.8
88
-
-
(712)
-
-
-
-
-
-
-
-
(710) 780
83.0
-
63.3
73.3
87
-
-
(698) 760
81.1
-
59.7
70.5
-
-
-
(638) 680
80.8
-
59.2
70.1
80
-
-
630
670
80.6
-
58.8
69.8
-
-
-
627
667
80.5
-
58.7
69.7
79
-
-
-
677
80.7
-
59.1
70.0
-
-
-
601
640
79.8
-
57.3
68.7
77
-
-
-
640
79.8
-
57.3
68.7
-
-
-
578
615
79.1
-
-
607
78.8
-
555
591
78.4
-
-
579
78.0
-
534
569
77.8
-
-
533
77.1
-
514
547
76.9
(495) -
495
539 530 528
76.7 76.4 76.3
(477) -
477
516 508 508
75.9 75.6 75.6
(461) -
461
187
187
196
-
183
183
192
-
179
179
188
-
174
174
182
-
170
170
178
-
167
167
175
-
163
163
171
-
156
156
163
-
149
149
156
-
143
143
150
-
137
137
143
-
(108.0)
(107.5) (107.0) (106.0) (105.5) (104.5)
363 352 341 331
383 372 360 350
70.0 69.3 68.7 68.1
-
-
-
-
-
-
-
-
-
(110.0) (109.0) (108.5)
56.0
55.6 54.7
54.0 53.5
52.5 52.1
51.6 51.1 51.0
50.3 49.6 49.6
48.8 48.5 48.5
27.6 26.6 25.4 24.2 22.8
21.7 20.5 (18.8) (17.5) (16.0)
(15.2) (13.8) (12.7) (11.5) (10.0)
(9.0) (8.0) (6.4) (5.4) (4.4)
(3.3) (0.9)
-
51.0
47
50.0
46
49.3
45
48.3
-
60.8
63
59.7
61
58.8
59
57.8
58
56.8
56
55.7
54
54.6
52
53.8
51
52.8
50
51.9
48
-
2055
2015 1985
1915 1890
1855 1825 1820
1780 1740 1740
1680 1670 1670
1595 1585 1585
1510 1460 1390 1330 1270
725 705
690 675 655 640 620
615 600 585 570 560
545 525 505 490 460
131
131
137
-
74.0
-
126
126
132
-
72.0
-
121
121
127
-
69.8
-
116
116
122
-
67.6
-
111
111
117
-
65.7
-
-
-
-
20
-
19
-
18
硬度对照表
■钢的布氏硬度的近似换算值
布氏硬度(HB) 10mm 3000kgf
标准球 碳化钨球
-
-
维 氏 洛氏硬度 A 硬 载荷 60kgf 度 金刚石圆锥 (HV) 压印头
(HRA)
洛氏硬度(3)
洛氏硬度 B 载荷 100kgf 刚球 Ø1.6mm 球
(1/16in) (HRB)
洛氏硬度 C 载荷 100kgf 金刚石圆锥
1220 1180 1130 1095
321
321
339
67.5
311 302 293 285 277
311 302 293 285 277
328 319 309 301 292
66.9 66.3 65.7 65.3 64.6
269 262 255 248 241
269 262 255 248 241
压印头 (HRC)
940
85.6
-
68.0
-
-
920
85.3
-
67.5
-
-
900
85.0
-
67.0
-
(767) 880
84.7
-
66.4
-
(757) 860
84.4
-
65.9
洛氏硬度 D 载荷 150kgf 金刚石圆锥
压印头 (HRD)
肖
氏 抗拉强度
硬 (近似值)MPa(2)
度
(HS)
76.9
97
-
82.6
-
62.5
72.6
86
-
-
(684) 740
82.2
-
61.8
72.1
-
-
-
(682) 737
82.2
-
61.7
72.0
84
-
-
(670) 720
81.8
-
61.0
71.5
83
-
-
(656) 700
81.3
-
60.1
70.8
-
-
-
(653) 697
81.2
-
60.0
70.7
81
-
-
(647) 690
47.2 47.1 47.1
45.7 44.5 43.1 41.8 40.4
39.1 37.9 36.6 35.5
67.7
75
67.4
-
66.7
73
66.1
-
65.8
71
65.0
-
64.7
70
64.3
-
63.9
-
63.8
68
63.2
-
62.7
-
62.7
66
61.9
-
61.7
-
61.7
65
61.0
-
60.8
43
47.6
-
46.7
41
45.9
40
45.0
39
44.2
38
43.2
37
42.0
36
41.4
35
40.5
34
---33---
32
-
31
-
30
-
29
-
-
-
28
-
27
-
-
-
26
-
-
-
25
-
-
-
23
-
22
-
21
1060
1025 1005 970 950 925