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Pressure Vessel Temperature Ratings for Group 1.11 Materials per. ASME B16.5 Pipes, Flanges and Flanged Fittings.

Structural Design and Analysis
Pressure Vessel Design and Engineering

Pressure Vessel Temperature Ratings for Group 1.11 Materials per. ASME B16.5 Pipes, Flanges and Flanged Fittings.

1 bar = 14.5038 psi

Designation
Forgings
Castings
Plates
C - 1/2 Mo
-

-

A 204, Gr. C (1)

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Bars to PSI and PSI to bars pressure conversion calculator

 

All pressure. given in Bars.

Temp.,°C
150
300
400
600
900
1500
2500
−29 to 38
20.0
51.7
68.9
103.4
155.1
258.6
430.9
50
19.5
51.7
68.9
103.4
155.1
258.6
430.9
100
17.7
51.5
68.7
103.0
154.6
257.6
429.4
150
15.8
50.3
66.8
100.3
150.6
250.8
418.2
200
13.8
48.6
64.8
97.2
145.8
243.4
405.4
250
12.1
46.3
61.7
92.7
139.0
231.8
386.2
300
10.2
42.9
57.0
85.7
128.6
214.4
357.1
325
9.3
41.4
55.0
82.6
124.0
206.6
344.3
350
8.4
40.3
53.6
80.4
120.7
201.1
335.3
375
7.4
38.9
51.6
77.6
116.5
194.1
323.2
400
6.5
36.5
48.9
73.3
109.8
183.1
304.9
425
5.5
35.2
46.5
70.0
105.1
175.1
291.6
450
4.6
33.7
45.1
67.7
101.4
169.0
281.8
475
3.7
31.7
42.3
63.4
95.1
158.2
263.9
500
2.8
23.6
31.4
47.1
70.7
117.8
196.3
538
1.4
11.3
15.3
22.7
34.4
56.7
94.6
550
...
11.3
15.3
22.7
34.4
56.7
94.6
575
...
10.1
13.6
20.1
30.2
50.3
83.8
600
...
7.1
9.5
14.2
21.3
35.6
59.3
625
...
5.3
7.1
10.6
15.9
26.5
44.2
650
...
3.1
4.1
6.1
9.2
15.4
25.6

NOTE:

(1) Upon prolonged exposure to temperatures above 465°C, the carbide phase of carbon–molybdenum steel may be converted to graphite. Permissible, but not recommended for prolonged use above 465°

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