Metal Hardness And The Test
The Material Hardness refers to the ability of a material to resist deformation, especially plastic deformation, indentation, or scratches. It is an indicator for measuring the softness and hardness of materials.
Attached is the Comparison Table of different measurement.
HV=HB=HRC Hardness Comparison
|
Tensile strength(N/mm²) |
HV |
HB |
HRC |
|
255 |
80 |
76.0 |
- |
|
270 |
85 |
80.7 |
- |
|
285 |
90 |
85.2 |
- |
|
305 |
95 |
90.2 |
- |
|
320 |
100 |
95.0 |
- |
|
335 |
105 |
99.8 |
- |
|
350 |
110 |
105 |
- |
|
370 |
115 |
109 |
- |
|
380 |
120 |
114 |
- |
|
400 |
125 |
119 |
- |
|
415 |
130 |
124 |
- |
|
430 |
135 |
128 |
- |
|
450 |
140 |
133 |
- |
|
465 |
145 |
138 |
- |
|
480 |
150 |
143 |
- |
|
490 |
155 |
147 |
- |
|
510 |
160 |
152 |
- |
|
530 |
165 |
156 |
- |
|
545 |
170 |
162 |
- |
|
560 |
175 |
166 |
- |
|
575 |
180 |
171 |
- |
|
595 |
185 |
176 |
- |
|
610 |
190 |
181 |
- |
|
625 |
195 |
185 |
- |
|
640 |
200 |
190 |
- |
|
660 |
205 |
195 |
- |
|
675 |
210 |
199 |
- |
|
690 |
215 |
204 |
- |
|
705 |
220 |
209 |
- |
|
720 |
225 |
214 |
- |
|
740 |
230 |
219 |
- |
|
755 |
235 |
223 |
- |
|
770 |
240 |
228 |
20.3 |
|
785 |
245 |
233 |
21.3 |
|
800 |
250 |
238 |
22.2 |
|
820 |
255 |
242 |
23.1 |
|
835 |
260 |
247 |
24.0 |
|
850 |
265 |
252 |
24.8 |
|
865 |
270 |
257 |
25.6 |
|
880 |
275 |
261 |
26.4 |
|
900 |
280 |
266 |
27.1 |
|
915 |
285 |
271 |
27.8 |
|
930 |
290 |
276 |
28.5 |
|
950 |
295 |
280 |
29.2 |
|
965 |
300 |
285 |
29.8 |
|
995 |
310 |
295 |
31.0 |
|
1030 |
320 |
304 |
32.2 |
|
1060 |
330 |
314 |
33.3 |
|
1095 |
340 |
323 |
34.4 |
|
1125 |
350 |
333 |
35.5 |
|
1115 |
360 |
342 |
36.6 |
|
1190 |
370 |
352 |
37.7 |
|
1220 |
380 |
361 |
38.8 |
|
1255 |
390 |
371 |
39.8 |
|
1290 |
400 |
380 |
40.8 |
|
1320 |
410 |
390 |
41.8 |
|
1350 |
420 |
399 |
42.7 |
|
1385 |
430 |
409 |
43.6 |
|
1420 |
440 |
418 |
44.5 |
|
1455 |
450 |
428 |
45.3 |
|
1485 |
460 |
437 |
46.1 |
|
1520 |
470 |
447 |
46.9 |
|
1555 |
480 |
(456) |
47.7 |
|
1595 |
490 |
(466) |
48.4 |
|
1630 |
500 |
(475) |
49.1 |
|
1665 |
510 |
(485) |
49.8 |
|
1700 |
520 |
(494) |
50.5 |
|
1740 |
530 |
(504) |
51.1 |
|
1775 |
540 |
(513) |
51.7 |
|
1810 |
550 |
(523) |
52.3 |
|
1845 |
560 |
(532) |
53.0 |
|
1880 |
570 |
(542) |
53.6 |
|
1920 |
580 |
(551) |
54.1 |
|
1955 |
590 |
(561) |
54.7 |
|
1995 |
600 |
(570) |
55.2 |
|
2030 |
610 |
(580) |
55.7 |
|
2070 |
620 |
(589) |
56.3 |
|
2105 |
630 |
(599) |
56.8 |
|
2145 |
640 |
(608) |
57.3 |
|
2180 |
650 |
(618) |
57.8 |
|
660 |
58.3 |
||
|
670 |
58.8 |
||
|
680 |
59.2 |
||
|
690 |
59.7 |
||
|
700 |
60.1 |
||
|
720 |
61.0 |
||
|
740 |
61.8 |
||
|
760 |
62.5 |
||
|
780 |
63.3 |
||
|
800 |
64.0 |
||
|
820 |
64.7 |
||
|
840 |
65.3 |
||
|
860 |
65.9 |
||
|
880 |
66.4 |
||
|
900 |
67.0 |
||
|
920 |
67.5 |
||
|
940 |
68.0 |
