| |
|
Brinell hardness (HB) |
|
Rockwell hardness (HR) |
|
|
|
Tensile strength |
| |
10 mm ball, 3,000 kgf load |
|
(Approximate) |
| |
|
|
|
|
|
A scale, |
|
B scale, |
|
C scale, |
|
D scale, |
|
Austenitic |
|
Chromium |
| Vicker's |
|
|
Tungsten- |
60kgf load |
100kgf load |
150kgf load |
100kgf load |
Shore |
stainless |
stainless |
| hardness |
Standard |
Hultgren |
carbide |
brale |
1/16 inch |
brale |
brale |
hardness |
steel |
steel |
| (HV) |
ball |
ball |
ball |
penetrator |
ball |
penetrator |
penetrator |
(HS) |
kgf/mm2
|
kgf/mm2
|
| |
|
|
|
|
|
|
|
|
|
|
| 600 |
-- |
550 |
564 |
78.6 |
-- |
55.2 |
67.0 |
74 |
245 |
-- |
| 590 |
-- |
542 |
554 |
78.4 |
-- |
54.7 |
66.7 |
| 580 |
-- |
535 |
545 |
78.0 |
-- |
54.1 |
66.2 |
72 |
236 |
-- |
| 570 |
-- |
527 |
535 |
77.8 |
-- |
53.6 |
65.8 |
| 560 |
|
519 |
525 |
77.4 |
-- |
53.0 |
65.4 |
71 |
227 |
-- |
| 550 |
505 |
521 |
517 |
77.0 |
-- |
52.3 |
64.8 |
| 540 |
496 |
503 |
507 |
76.7 |
-- |
51.7 |
64.4 |
69 |
218 |
-- |
| 530 |
488 |
495 |
497 |
76.4 |
-- |
51.1 |
63.9 |
| 520 |
480 |
487 |
488 |
76.1 |
-- |
50.5 |
63.5 |
67 |
209 |
-- |
| 510 |
473 |
479 |
479 |
75.7 |
-- |
49.8 |
62.9 |
| 500 |
465 |
471 |
471 |
75.3 |
-- |
49.1 |
62.2 |
66 |
200 |
-- |
| 490 |
456 |
460 |
460 |
74.9 |
-- |
48.4 |
61.6 |
| 480 |
448 |
452 |
452 |
74.5 |
-- |
47.7 |
61.3 |
64 |
189 |
-- |
| 470 |
441 |
442 |
442 |
74.1 |
-- |
46.9 |
60.7 |
| 460 |
433 |
433 |
433 |
73.6 |
-- |
46.1 |
60.1 |
62 |
178 |
-- |
| 450 |
425 |
425 |
425 |
73.3 |
-- |
45.3 |
59.4 |
| 440 |
415 |
415 |
415 |
74.8 |
-- |
44.5 |
58.8 |
59 |
167 |
-- |
| 430 |
405 |
405 |
405 |
72.3 |
-- |
43.6 |
58.2 |
| 420 |
397 |
397 |
397 |
71.8 |
-- |
42.7 |
57.5 |
57 |
156 |
-- |
| 410 |
388 |
388 |
388 |
71.4 |
-- |
41.8 |
56.8 |
| 400 |
379 |
379 |
379 |
70.8 |
-- |
40.8 |
56.0 |
55 |
145 |
134 |
| 390 |
369 |
369 |
369 |
70.3 |
-- |
39.8 |
55.2 |
| 380 |
360 |
360 |
360 |
69.8 |
(110.0) |
38.8 |
54.4 |
52 |
136 |
127 |
| 370 |
350 |
350 |
350 |
69.2 |
37.7 |
53.6 |
| 360 |
341 |
341 |
341 |
68.7 |
(109.0) |
36.6 |
52.8 |
50 |
127 |
120 |
| 350 |
331 |
331 |
331 |
68.1 |
35.5 |
51.9 |
| 340 |
322 |
322 |
322 |
67.6 |
(108.0) |
34.4 |
51.1 |
47 |
118 |
113 |
| 330 |
313 |
313 |
313 |
67.0 |
33.3 |
50.2 |
| 320 |
303 |
303 |
303 |
66.4 |
(107.0) |
32.2 |
49.4 |
45 |
109 |
106 |
| 310 |
294 |
294 |
294 |
65.8 |
31.0 |
48.4 |
| 300 |
284 |
284 |
284 |
65.2 |
(105.5) |
29.8 |
47.5 |
42 |
100 |
-- |
| 295 |
280 |
280 |
280 |
64.8 |
29.2 |
47.1 |
| 290 |
275 |
275 |
275 |
64.5 |
(104.5) |
28.5 |
45.5 |
41 |
97 |
96 |
| 285 |
270 |
270 |
270 |
64.2 |
27.8 |
46.0 |
| 280 |
265 |
265 |
265 |
63.8 |
(103.5) |
27.1 |
45.3 |
40 |
94 |
-- |
| 275 |
261 |
261 |
261 |
63.5 |
26.4 |
44.9 |
| 270 |
256 |
256 |
256 |
63.1 |
(102.0) |
25.6 |
44.3 |
38 |
91 |
88 |
| 265 |
252 |
252 |
252 |
62.7 |
24.8 |
43.7 |
| 260 |
247 |
247 |
247 |
62.4 |
(101.0) |
24.0 |
43.1 |
37 |
88 |
-- |
| 255 |
243 |
243 |
243 |
62.0 |
23.1 |
42.2 |
| 250 |
238 |
238 |
238 |
61.6 |
99.5 |
22.2 |
41.7 |
36 |
85 |
81 |
| 245 |
233 |
233 |
233 |
61.2 |
21.3 |
41.1 |
| 240 |
228 |
228 |
228 |
60.7 |
98.1 |
20.3 |
40.3 |
34 |
80 |
78 |
| 230 |
219 |
219 |
219 |
-- |
96.7 |
(18.0) |
-- |
33 |
| 220 |
209 |
209 |
209 |
-- |
95.0 |
(15.7) |
-- |
32 |
75 |
71 |
| 210 |
200 |
200 |
200 |
-- |
93.4 |
(13.4) |
-- |
30 |
| 200 |
190 |
190 |
190 |
-- |
91.5 |
(11.0) |
-- |
29 |
68 |
65 |
| 190 |
181 |
181 |
181 |
-- |
89.5 |
(8.5) |
-- |
28 |
| 180 |
171 |
171 |
171 |
-- |
87.1 |
(6.0) |
-- |
26 |
62 |
59 |
| 170 |
162 |
162 |
162 |
-- |
85.0 |
(3.0) |
-- |
25 |
| 160 |
152 |
152 |
152 |
-- |
81.7 |
(0.0) |
-- |
24 |
56 |
53 |
| 150 |
143 |
143 |
143 |
-- |
78.7 |
-- |
-- |
22 |
50 |
50 |
|
