ПРИЛОЖЕНИЕ 4
Обязательное
Таблица 9
Расстояние от торца, мм |
Твердость для полос прокаливаемости стали марок |
|||||
35 |
40 |
45 |
||||
макс. |
мин. |
макс. |
мин. |
макс. |
мин. |
|
1,5 |
57,0 HRC |
49,5 HRC |
58,0 HRC |
50,5 HRC |
59,0 HRC |
50,5 HRC |
3,0 |
55,0 HRC |
44,0 HRC |
57,0 HRC |
45,5 HRC |
57,0 HRC |
45,5 HRC |
4,5 |
49,0 HRC |
27,0 HRC |
52,5 HRC |
29,0 HRC |
54,0 HRC |
29,0 HRC |
6,0 |
38,0 HRC |
23,0 HRC |
37,5 HRC |
26,0 HRC |
42,5 HRC |
26,0 HRC |
7,5 |
31,0 HRC |
20,0 HRC |
33,5 HRC |
24,0 HRC |
36,5 HRC |
24,0 HRC |
9,0 |
30,0 HRC |
94 HRB |
32,0 HRC |
22,0 HRC |
33,0 HRC |
22,0 HRC |
10,5 |
29,0 HRC |
93 HRB |
30,0 HRC |
20,0 HRC |
32,5 HRC |
21,0 HRC |
12,0 |
28,0 HRC |
92 HRB |
29,0 HRC |
94 HRB |
31,0 HRC |
20,0 HRC |
13,5 |
27,5 HRC |
91 HRB |
28,0 HRC |
93 HRB |
30,0 HRC |
94 HRB |
15,0 |
27,0 HRC |
90 HRB |
27,5 HRC |
92 HRB |
29,5 HRC |
93 HRB |
16,5 |
26,5 HRC |
89 HRB |
27,0 HRC |
91 HRB |
29,0 HRC |
92 HRB |
18,0 |
26,0 HRC |
88 HRB |
26,5 HRC |
89 HRB |
28,5 HRC |
91 HRB |
19,5 |
25,5 HRC |
87 HRB |
26,0 HRC |
88 HRB |
28,0 HRC |
90 HRB |
21,0 |
25,0 HRC |
86 HRB |
25,5 HRC |
87 HRB |
27,0 HRC |
89 HRB |
24,0 |
24,0 HRC |
85 HRB |
25,0 HRC |
86 HRB |
26,0 HRC |
88 HRB |
27,0 |
23,0 HRC |
84 HRB |
24,0 HRC |
85 HRB |
25,0 HRC |
87 HRB |
30,0 |
22,0 HRC |
83 HRB |
23,0 HRC |
84 HRB |
24,0 HRC |
86 HRB |
33,0 |
- |
- |
22,5 HRC |
83 HRB |
- |
- |
36,0 |
- |
- |
22,0 HRC |
82 HRB |
- |
- |
(Измененная редакция, Изм. N 2).