|
Property Class |
|||||||||
|
Mechanical Property |
8.8 |
||||||||
|
4.8 |
5.6 |
5.8 |
6.8 |
To M16 |
Over M16 |
9.8 |
10.9 |
12.9 |
|
|
Tensile Strength nom |
400 |
500 |
600 |
800 |
800 |
900 |
1000 |
1200 |
|
|
Rm, N/mm� min |
420 |
500 |
520 |
600 |
800 |
830 |
900 |
1040 |
1220 |
|
Brinell min |
124 |
147 |
152 |
181 |
219 |
242 |
266 |
295 |
353 |
|
Hardness max |
238 |
285 |
319 |
342 |
363 |
412 |
|||
|
HRB |
71 |
79 |
82 |
89 |
- |
- |
- |
- |
- |
|
Rockwell HRC |
- |
- |
- |
- |
20 |
23 |
28 |
32 |
39 |
|
Hardness HRB |
95 |
99 |
- |
- |
- |
- |
- |
||
|
HRC |
- |
- |
- |
- |
32 |
34 |
37 |
39 |
44 |
|
Vickers min |
130 |
155 |
160 |
190 |
250 |
255 |
290 |
320 |
385 |
|
Hardness max |
250 |
320 |
336 |
360 |
380 |
435 |
|||
|
Yield Stress nom |
320 |
300 |
400 |
480 |
- |
- |
- |
- |
- |
|
ReL, N/mm� min |
340 |
300 |
420 |
480 |
- |
- |
- |
- |
- |
|
Stress at permanent nom |
- |
640 |
640 |
720 |
900 |
1080 |
|||
|
Set Limit N/mm� min |
- |
640 |
660 |
720 |
940 |
1100 |
|||