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Pressure Vessel Temperature Ratings for Group 1.3 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 1.3 Materials per. ASME B16.5 Pipes Flanges and Flanged Fittings.

1 bar = 14.5038 psi

Designation	Forgings	Castings	Plates
C–Si	-	A 352 Gr. LCB (3)	A 515 Gr. 65 (1)
C–Mn–Si	-	-	A 516 Gr. 65 (1), (2)
2 1⁄2 Ni	-	A 217 Gr. Wc1 (4), (5) A 352 Gr. LC1 (3)	A 203 Gr. A (1)
3 1⁄2 Ni	-	-	A 203 Gr. D (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	18.4	48.0	64.0	96.0	144.1	240.1	400.1
50	18.2	47.5	63.3	94.9	142.4	237.3	395.6
100	17.4	45.3	60.5	90.7	136.0	226.7	377.8
150	15.8	43.9	58.6	87.9	131.8	219.7	366.1
200	13.8	42.5	56.7	85.1	127.6	212.7	354.4
250	12.1	40.8	54.4	81.6	122.3	203.9	339.8
300	10.2	38.7	51.6	77.4	116.1	193.4	322.4
325	9.3	37.6	50.1	75.2	112.7	187.9	313.1
350	8.4	36.4	48.5	72.8	109.2	182.0	303.3
375	7.4	35.0	46.6	69.9	104.9	174.9	291.4
400	6.5	32.6	43.5	65.2	97.9	163.1	271.9
425	5.5	27.3	36.4	54.6	81.9	136.5	227.5
450	4.6	21.6	28.8	43.2	64.8	107.9	179.9
475	3.7	15.7	20.9	31.3	47.0	78.3	130.6
500	2.8	11.1	14.8	22.1	33.2	55.4	92.3
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 340°C.
(4) Upon prolonged exposure to temperatures above 465°C, the carbide phase of steel may be converted to graphite. Permissible, but not recommended for prolonged use above 465°C.
(5) Use normalized and tempered material only.