ANSI B16.5 - Steel Pipe Flanges - Maximum Pressure and Temperature Ratings - Group 1.2
Non-shock pressure (psig) and temperature ratings for steel pipe flanges and flanged fittings
Maximum allowable non-shock pressure (psig) and temperature ratings for steel pipe flanges and flanged fittings according the American National Standard ANSI B16.5 - 1988.
Maximum Allowable non-shock Pressure (psig) | |||||||
---|---|---|---|---|---|---|---|
Temperature (oF) | Pressure Class (lb) | ||||||
150 | 300 | 400 | 600 | 900 | 1500 | 2500 | |
Hydrostatic Test Pressure (psig) | |||||||
450 | 1125 | 1500 | 2225 | 3350 | 5575 | 9275 | |
-20 to 100 | 290 | 750 | 1000 | 1500 | 2250 | 3750 | 6250 |
200 | 260 | 750 | 1000 | 1500 | 2250 | 3750 | 6250 |
300 | 230 | 730 | 970 | 1455 | 2185 | 3640 | 6070 |
400 | 200 | 705 | 940 | 1405 | 2110 | 3520 | 5865 |
500 | 170 | 665 | 885 | 1330 | 1995 | 3325 | 5540 |
600 | 140 | 605 | 805 | 1210 | 1815 | 3025 | 5040 |
650 | 125 | 590 | 785 | 1175 | 1765 | 2940 | 4905 |
700 | 110 | 555 | 740 | 1110 | 1665 | 2775 | 4630 |
750 | 95 | 505 | 675 | 1015 | 1520 | 2535 | 4230 |
800 | 80 | 410 | 550 | 825 | 1235 | 2055 | 3430 |
850 | 65 | 320 | 425 | 640 | 955 | 1595 | 2655 |
900 | 50 | 225 | 295 | 445 | 670 | 1115 | 1855 |
950 | 35 | 135 | 185 | 275 | 410 | 685 | 1145 |
1000 | 20 | 85 | 115 | 170 | 255 | 430 | 715 |
The values in this table apply to materials Group 1.2
For other Material Groups the Pressure-Temperature Ratings are different. Most carbon steels are only acceptable for temperatures below 800 F.
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