德国粗糙度标准
VDI |
Ra |
VDI |
Ra |
00 |
0.1 |
23 |
1.4 |
01 |
0.112 |
24 |
1.6 |
02 |
0.126 |
25 |
1.8 |
03 |
0.14 |
26 |
2 |
04 |
0.16 |
27 |
2.2 |
05 |
0.18 |
28 |
2.5 |
06 |
0.2 |
29 |
2.8 |
07 |
0.22 |
30 |
3.2 |
08 |
0.25 |
31 |
3.5 |
09 |
0.28 |
32 |
4 |
10 |
0.32 |
33 |
4.5 |
11 |
0.35 |
34 |
5 |
12 |
0.4 |
35 |
5.6 |
13 |
0.45 |
36 |
6.3 |
14 |
0.5 |
37 |
7 |
15 |
0.56 |
38 |
8 |
16 |
0.63 |
39 |
9 |
17 |
0.7 |
40 |
10 |
18 |
0.8 |
41 |
11.2 |
19 |
0.9 |
42 |
12.6 |
20 |
1 |
43 |
14 |
21 |
1.12 |
44 |
16 |
22 |
1.26 |
45 |
18 |