Твердость для полос прокаливаемости,
|
Расстояние от торца, мм |
Твердость для полос прокаливаемости, HRC |
|||||||||||||||
|
суженной |
марочной |
суженной |
марочной |
суженной |
марочной |
суженной |
марочной |
|||||||||
|
Макс. |
Мин. |
Макс. |
Мин. |
Макс. |
Мин. |
Макс. |
Мин. |
Макс. |
Мин. |
Макс. |
Мин. |
Макс. |
Мин. |
Макс. |
Мин. |
|
|
Стали марок |
||||||||||||||||
|
20ХГР |
27ХГР |
25ХГМ |
30ХМА |
|||||||||||||
|
1,5 |
44,5 |
37,5 |
46,0 |
36,0 |
50,5 |
45,0 |
51,5 |
44,0 |
50,0 |
44,0 |
51,0 |
43,0 |
52,0 |
49,0 |
53,0 |
48,0 |
|
3,0 |
44,0 |
37,0 |
45,5 |
35,5 |
50,5 |
45,0 |
51,5 |
44,0 |
49,0 |
42,5 |
50,0 |
41,5 |
51,0 |
47,5 |
52,0 |
46,5 |
|
4,5 |
43,5 |
36,5 |
45,0 |
35,0 |
50,0 |
44,5 |
51,0 |
43,5 |
48,0 |
41,0 |
49,0 |
40,0 |
50,0 |
46,0 |
51,0 |
44,5 |
|
6,0 |
43,0 |
33,5 |
44,5 |
33,5 |
50,0 |
44,5 |
51,0 |
43,5 |
47,0 |
39,0 |
48,0 |
38,0 |
48,5 |
43,5 |
49,5 |
42,0 |
|
7,5 |
42,5 |
33,5 |
44,0 |
32,0 |
49,0 |
43,5 |
50,5 |
42,5 |
46,0 |
37,5 |
47,5 |
36,0 |
47,0 |
40,0 |
48,0 |
39,0 |
|
9,0 |
41,0 |
32,0 |
43,0 |
30,0 |
48,5 |
43,5 |
50,0 |
42,0 |
45,0 |
36,5 |
46,5 |
35,0 |
45,0 |
37,0 |
46,5 |
35,5 |
|
10,5 |
40,0 |
30,0 |
42,5 |
27,5 |
48,0 |
43,0 |
49,5 |
41,5 |
44,0 |
35,5 |
45,5 |
34,0 |
43,5 |
34,5 |
45,0 |
33,5 |
|
12,0 |
39,0 |
27,5 |
41,5 |
25,0 |
47,5 |
41,5 |
49,0 |
40,0 |
43,0 |
34,5 |
45,0 |
33,0 |
41,5 |
33,0 |
43,0 |
31,5 |
|
13,5 |
37,5 |
25,5 |
40,0 |
23,0 |
47,0 |
40,0 |
48,5 |
38,5 |
42,5 |
33,5 |
44,0 |
32,0 |
39,0 |
31,5 |
40,5 |
30,0 |
|
15,0 |
37,0 |
24,0 |
39,0 |
22,0 |
46,5 |
39,0 |
48,0 |
37,5 |
42,0 |
33,0 |
43,0 |
30,5 |
36,5 |
29,5 |
38,0 |
28,0 |
|
16,5 |
35,0 |
- |
37,0 |
- |
46,0 |
36,5 |
47,5 |
35,0 |
41,0 |
31,5 |
42,5 |
29,5 |
35,5 |
28,5 |
37,0 |
27,0 |
|
18,0 |
34,0 |
- |
36,5 |
- |
45,0 |
35,5 |
46,5 |
33,0 |
40,5 |
31,0 |
42,0 |
28,5 |
34,5 |
27,5 |
36,0 |
26,0 |
|
19,5 |
33,0 |
- |
34,0 |
- |
44,0 |
34,0 |
46,0 |
32,0 |
39,5 |
30,0 |
41,0 |
27,5 |
33,5 |
26,5 |
35,0 |
25,0 |
|
21,0 |
31,5 |
- |
33,0 |
- |
43,0 |
32,0 |
44,5 |
30,0 |
38,5 |
29,0 |
40,5 |
26,5 |
32,5 |
25,5 |
34,0 |
24,5 |
|
24,0 |
29,5 |
- |
31,0 |
- |
41,5 |
29,0 |
42,5 |
27,0 |
37,5 |
27,0 |
39,5 |
25,0 |
31,0 |
24,0 |
32,5 |
22,0 |
|
27,0 |
28,0 |
- |
29,5 |
- |
40,0 |
26,5 |
41,0 |
25,0 |
36,5 |
26,0 |
38,5 |
24,5 |
30,0 |
22,0 |
32,0 |
20,5 |
|
30,0 |
26,5 |
- |
28,5 |
- |
38,0 |
24,0 |
39,0 |
23,0 |
35,5 |
25,0 |
37,5 |
23,5 |
29,0 |
- |
31,0 |
- |
|
33,0 |
25,5 |
- |
27,5 |
- |
36,0 |
22,5 |
37,5 |
21,5 |
34,5 |
24,0 |
36,0 |
22,5 |
28,0 |
- |
30,0 |
- |
|
36,0 |
25,0 |
- |
27,0 |
- |
34,0 |
21,5 |
35,0 |
20,0 |
33,5 |
22,5 |
35,0 |
21,0 |
- |
- |
- |
- |
