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Maximum temperature and pressure ratings of flanges conforming dimensions ASME B16.5 and materials specification ASTM A-105
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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.
| Gage 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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