Related Resources: pressure-vessel

Pressure Vessel Temperature Ratings for Group 1.2 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 1.2 Materials per. ASME B16.5 Pipes Flanges and Flanged Fittings.

1 bar = 14.5038 psi

Designation	Forgings	Castings	Plates
C–Mn–Si	-	A 216 Gr. WCC (1) A 352 Gr. LCC (2)	-
C–Mn–Si–V	A 350 Gr. LF6 Cl.2 (3	-	-
2 1⁄2 Ni	-	-	A 203 Gr. B (1)
3 1⁄2 Ni	-	Ni A 352 Gr LC#	A 203 Gr. E (1)

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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	19.8	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	50.2	66.8	100.3	150.5	250.8	418.1
200	13.8	48.6	64.8	97.2	145.8	243.2	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	40.0	53.4	80.0	120.1	200.1	333.5
375	7.4	37.8	50.4	75.7	113.5	189.2	315.3
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	17.1	22.8	34.2	51.3	85.4	142.4
500	2.8	11.6	15.4	23.2	34.7	57.9	96.5
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 340°C.
(3) Not to be used over 260°C.