常用材质的工作温度、工作压力与PN关系表
材料
|
公称压力PN(MPa)
|
介质工作温度(℃)
|
||||||||||||||
<120
|
<200
|
<250
|
<300
|
<350
|
<400
|
<425
|
<450
|
<475
|
<500
|
<525
|
<550
|
<575
|
<600
|
<625
|
||
最大工作压力(MPa)
|
||||||||||||||||
铸铁
|
1.6
|
1.6
|
1.5
|
1.4
|
|
|
|
|
|
|
|
|
|
|
|
|
碳素钢
|
4.0
|
4.0
|
4.0
|
3.7
|
3.3
|
3.0
|
2.8
|
2.3
|
1.8
|
|
|
|
|
|
|
|
6.4
|
6.4
|
6.4
|
5.9
|
5.2
|
4.7
|
4.1
|
3.7
|
2.9
|
|
|
|
|
|
|
|
|
22.0
|
22.0
|
22.0
|
20.2
|
18.0
|
16.1
|
14.1
|
12.7
|
9.8
|
|
|
|
|
|
|
|
|
32.0
|
32.0
|
32.0
|
29.4
|
26.2
|
23.4
|
20.5
|
18.5
|
14.4
|
|
|
|
|
|
|
|
|
1Crl8Ni9Ti
|
4.0
|
4.0
|
4.0
|
4.0
|
4.0
|
4.0
|
3.0
|
2.7
|
2.4
|
2.1
|
1.9
|
1.7
|
1.4
|
1.1
|
0.8
|
0.5
|
6.4
|
6.4
|
6.4
|
6.4
|
6.4
|
6.4
|
4.4
|
4.2
|
4.0
|
3.8
|
3.5
|
3.4
|
3.2
|
2.9
|
2.6
|
2.2
|
|
22.0
|
22.0
|
22.0
|
22.0
|
22.0
|
22.0
|
16.5
|
14.8
|
13.2
|
11.5
|
10.5
|
9.3
|
7.7
|
6.0
|
4.4
|
2.7
|
|
32.0
|
32.0
|
32.0
|
32.0
|
32.0
|
32.0
|
24.0
|
21.6
|
19.2
|
16.8
|
15.2
|
13.6
|
11.2
|
8.8
|
6.4
|
4.0
|
|
钼钢
铬钼钢
含钼不少于0.4%
|
4.0
|
|
|
|
|
4.0
|
3.6
|
3.4
|
3.2
|
2.8
|
2.2
|
1.6
|
|
|
|
|
6.4
|
|
|
|
|
6.4
|
5.8
|
5.5
|
5.2
|
4.5
|
3.5
|
2.5
|
|
|
|
|
|
22.0
|
|
|
|
|
22.0
|
20.1
|
19.0
|
17.9
|
15.7
|
12.2
|
9.0
|
|
|
|
|
|
32.0
|
|
|
|
|
32.0
|
29.1
|
27.5
|
25.9
|
22.7
|
17.6
|
13.0
|
|
|
|