Related Resources: pressure-vessel

Pressure Vessel Materials Temperature Ratings for Group 1.1 Materials

Structural Design and Analysis
Pressure Vessel Design and Engineering

Pressure Vessel Temperature Ratings for Group 1.1 Materials per. ASME B16.5 Pipes Flanges and Flanged Fittings.

1 bar = 14.5038 psi

Designation
Forgings
Castings
Plates
C-Si A
105 (1)
A 216 Gr. WCB (1)
A 515 Gr. 70 (1)
C-Mn-Si
A 350 Gr. LF2 (1)
-
A 516 Gr. 70 (1), (2)
C-Mn-Si-V
A 350 Gr. LF6 Cl. (4)
-
 
3 1⁄2 Ni
A 350 Gr. LF3
-
A 537 Cl. 1 (3)

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Bars to PSI and PSI to bars pressure conversion calculator

All pressures given in Bars.

Temp.,
°C
150
300
400
600
900
1500
2500
−29 to 38
19.6
51.1
68.1
102.1
153.2
255.3
425.5
50
19.2
50.1
66.8
100.2
150.4
250.6
417.7
100
17.7
46.6
62.1
93.2
139.8
233.0
388.3
150
15.8
45.1
60.1
90.2
135.2
225.4
375.6
200
13.8
43.8
58.4
87.6
131.4
219.0
365.0
250
12.1
41.9
55.9
83.9
125.8
209.7
349.5
300
10.2
39.8
53.1
79.6
119.5
199.1
331.8
325
9.3
38.7
51.6
77.4
116.1
193.6
322.6
350
8.4
37.6
50.1
75.1
112.7
187.8
313.0
375
7.4
36.4
48.5
72.7
109.1
181.8
303.1
400
6.5
34.7
46.3
69.4
104.2
173.6
289.3
425
5.5
28.8
38.4
57.5
86.3
143.8
239.7
450
4.6
23.0
30.7
46.0
69.0
115.0
191.7
475
3.7
17.4
23.2
34.9
52.3
87.2
145.3
500
2.8
11.8
15.7
23.5
35.3
58.8
97.9
538
1.4
5.9
7.9
11.8
17.7
29.5
49.2

NOTES:
(1) Upon prolonged exposure to temperatures above 425°C, the carbide phase of steel may be converted to graphite. Permissible but not recommended for prolonged use above 425°C.
(2) Not to be used over 455°C.
(3) Not to be used over 370°C.
(4) Not to be used over 260°C.

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