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Maximum Temperature and Pressure Ratings of Flanges B16.5
Maximum temperature and pressure ratings of flanges conforming dimensions ASME B16.5 Pipe Flanges and Flanged Fittings - and materials specification ASTM A-105 Specification for Carbon Steel Forgings for Piping Applications - temperature in Fahrenheit and pressure in psi.
Gauge Pressure (psi) |
Temperature
(oF) |
Flange Class |
150 |
300 |
400 |
600 |
900 |
1500 |
2500 |
< 100 |
285 |
740 |
990 |
1480 |
2220 |
3705 |
6170 |
200 |
260 |
675 |
900 |
1350 |
2025 |
3375 |
5625 |
300 |
230 |
655 |
875 |
1315 |
1970 |
3280 |
5470 |
400 |
200 |
635 |
845 |
1270 |
1900 |
3170 |
5280 |
500 |
170 |
600 |
800 |
1200 |
1795 |
2995 |
4990 |
600 |
140 |
550 |
730 |
1095 |
1640 |
2735 |
4560 |
650 |
125 |
535 |
715 |
1075 |
1610 |
2685 |
4475 |
700 |
110 |
535 |
710 |
1065 |
1600 |
2665 |
4440 |
750 |
95 |
505 |
670 |
1010 |
1510 |
2520 |
4200 |
800 |
80 |
410 |
550 |
825 |
1235 |
2060 |
3430 |
850 |
65 |
270 |
355 |
535 |
805 |
1340 |
2230 |
900 |
50 |
170 |
230 |
345 |
515 |
860 |
1430 |
950 |
35 |
105 |
140 |
205 |
310 |
515 |
860 |
1000 |
20 |
50 |
70 |
105 |
155 |
260 |
430 |
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