公称直径 |
粗螺距P |
dk |
k |
s |
t |
|||
max |
min |
max |
min |
max |
min |
|||
M1.4 |
0.3 |
2.74 |
2.46 |
1.4 |
1.26 |
1.36 |
1.32 |
0.6 |
M1.6 |
0.35 |
3.14 |
2.86 |
1.6 |
1.46 |
1.56 |
1.52 |
0.7 |
M2 |
0.4 |
3.98 |
3.62 |
2 |
1.86 |
1.56 |
1.52 |
1 |
M2.5 |
0.45 |
4.68 |
4.32 |
2.5 |
2.36 |
2.06 |
2.02 |
1.1 |
M3 |
0.5 |
5.68 |
5.32 |
3 |
2.86 |
2.58 |
2.52 |
1.3 |
M4 |
0.7 |
7.22 |
6.78 |
4 |
3.82 |
3.08 |
3.02 |
2 |
M5 |
0.8 |
8.72 |
8.28 |
5 |
4.82 |
4.095 |
4.02 |
2.5 |
M6 |
1 |
10.22 |
9.78 |
6 |
5.7 |
5.14 |
5.02 |
3 |
M8 |
1.25 |
13.27 |
12.73 |
8 |
7.64 |
6.14 |
6.02 |
4 |
M10 |
1.5 |
16.27 |
15.73 |
10 |
9.64 |
8.175 |
8.025 |
5 |
M12 |
1.75 |
18.27 |
17.73 |
12 |
11.57 |
10.18 |
10.025 |
6 |
M14 |
2 |
21.33 |
20.67 |
14 |
12.57 |
12.21 |
12.032 |
7 |
M16 |
2 |
24.33 |
23.67 |
16 |
15.57 |
14.21 |
14.032 |
8 |
M18 |
2.5 |
27.33 |
26.67 |
18 |
17.57 |
14.21 |
14.032 |
9 |
M20 |
2.5 |
30.33 |
19.67 |
20 |
19.48 |
17.23 |
17.05 |
10 |
M22 |
2.5 |
33.39 |
32.61 |
22 |
21.48 |
17.23 |
17.05 |
11 |
M24 |
3 |
36.36 |
35.61 |
24 |
23.48 |
19.28 |
19.065 |
12 |
M27 |
3 |
40.39 |
39.61 |
27 |
26.48 |
19.28 |
19.065 |
13.5 |
M30 |
3.5 |
45.39 |
44.61 |
30 |
29.48 |
22.28 |
22.065 |
15.6 |
组别 |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Ni |
Cu |
特性 |
304-A2 |
0.1 |
1 |
2 |
0.05 |
0.03 |
15-20 |
|
8-19 |
4 |
加工硬化率适中,适于一般的冷间加工以及伸抽,冷加工性能较好,普遍用于外六角螺钉、螺母以及垫圈产品 |
316-A4 |
0.08 |
1 |
2 |
0.045 |
0.03 |
16-18.5 |
2-3 |
10-15 |
1 |
加钼,耐腐蚀能力较304强,特别适用于海水及化学介质,更加的耐腐蚀性及耐孔蚀性。 |
注: 1)如镍含量低于8%,则锰的最小含量必须为5% |
类别 |
组别 |
性能等级 |
螺丝直径 |
抗拉强度mpa/mm2 |
规定非比列伸长应为mpa/mm2 |
断后伸长量mpa/mm2 |
奥氏体 |
A2,A4 |
50 |
≤ 39 |
500 |
210 |
0.6d |
70 |
≤ 24 |
700 |
450 |
0.4d |
||
80 |
≤ 24 |
800 |
600 |
0.3d |