|
中国标准 |
美国标准 |
日本标准 |
中值 |
|
w0.2 |
0-0.2 |
80000 |
0.1 |
|
w0.25 |
0-0.25 |
60000 |
0.11～0.20 |
|
w0.5 |
0-0.5 |
30000 |
0.20～0.30 |
|
w1 |
0-1 |
15000 |
0.6～0.8 |
|
w1.5- |
0-2 |
13000 |
1.0 |
|
w1.5 |
1-2 |
12000 |
1.1～1.3 |
|
w2.5 |
1-3 |
10000 |
1.6～1.8 |
|
w3 |
2-3 |
7000 |
1.9～2.1 |
|
w3.5 |
2-4- |
6500 |
2.2～2.6 |
|
w3.5 |
2-4 |
6000 |
2.6～3.0 |
|
w4 |
2-5 |
5000 |
3.1～3.4 |
|
w5 |
3-6 |
4000 |
3.5～4.2 |
|
w6 |
4-6 |
3500 |
4.4～5.0 |
|
w7 |
4-8 |
3000 |
5.0～6.0 |
|
w10 |
4-9 |
2500 |
6.1～6.5 |
|
w10 |
5-10 |
2000 |
6.5～7.3 |
|
w10 |
6-12 |
1800 |
7.3～8.3 |
|
w12 |
8-12 |
1600 |
8.3～9.0 |
|
w14 |
7-14 |
1500 |
9.1～10.5 |
|
w14 |
8-16 |
1300 |
10.0～12.0 |
|
w20- |
10-20 |
1200 |
12.5～15.0 |
|
w20 |
12-22 |
1000 |
15.0～17.0 |
|
w20+ |
15-25 |
800 |
18.0～20.0 |
|
w28 |
20-30 |
700 |
20～23 |
|
w28+ |
22-36 |
600 |
23～26 |
|
w40- |
20-40 |
500 |
26～29 |
|
w40 |
30-40 |
450 |
29～32 |
|
w40+ |
35-45 |
400 |
32～36 |
|
w50 |
36-54 |
|
37～43 |
|
325/400 |
320 |
43～48 |
|
|
270/325 |
280 |
48～55 |
|
|
230/270 |
240 |
56～64 |
|
|
200/230 |
200 |
65～73 |
|
|
200目以粗 |
|||