The chart below references nominal working pressure ratings for hydraulic steel tubing classified as SAE J524, SAE J525, SAE J526 and SAE J356. These working pressures assume a 4:1 safety factor and have been calculated the standard formula P=S((D2-d2)/(D2+d)).
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Please note the information provided is for reference only and should not be considered a standard or specification.
| Nominal Tubing Wall Thickness (in Inches) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
NOMINAL TUBE OD |
.028 | .035 | .049 |
.065 | .083 | .095 | .109 | .120 | .134 | .148 | .156 | .188 |
| .125 (1/8") | 6650 | 8450 | ||||||||||
| .188 (3/16") | 4250 | 5450 | ||||||||||
| .250 (1/4") | 3100 | 3950 | 5750 | 7800 | ||||||||
| .312 (5/16") | 2450 | 3100 | 4500 | 6150 | ||||||||
| .375 (3/8") | 2000 | 2550 | 3650 | 5000 | 6550 | 7600 | ||||||
| .500 (1/2") | 1850 | 2700 | 3650 | 4800 | 5550 | 6450 | 7200 | |||||
| .625 (5/8") | 1500 | 2100 | 2850 | 3750 | 4350 | 5050 | 6500 | |||||
| .750 (3/4") | 1200 | 1750 | 2350 | 3050 | 3550 | 4150 | 4600 | |||||
| .875 (7/8") | 1050 | 1500 | 2000 | 2600 | 3000 | 3500 | 3900 | |||||
| 1.000 (1") | 900 | 1300 | 1750 | 2250 | 2600 | 3000 | 3350 | 3800 | 4200 | |||
| 1.125 (1-1/8") | 1150 | 1550 | 2000 | 2300 | 2650 | 2950 | 3300 | 3700 | ||||
| 1.250 (1-1/4") | 1000 | 1350 | 1750 | 2050 | 2350 | 2650 | 2950 | 3300 | 3500 | 4300 | ||
| 1.500 (1-1/2") | 1150 | 1450 | 1700 | 1950 | 2150 | 2450 | 2700 | 2850 | 3500 | |||
| 1.750 (1-3/4") | 950 | 1250 | 1450 | 1650 | 1850 | 2050 | 2300 | 2400 | 2950 | |||
| 2.000 (2") | 850 | 1100 | 1250 | 1450 | 1600 | 1800 | 2000 | 2100 | 2550 | |||
