Flange Calculator

Calculate bolt load, gasket stress, and flange rating per SAE J518 and ASME B16.5

Input Parameters

Results

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Total Bolt Load
lbf
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Bolt Torque (each)
ft-lb
--
Gasket Stress
psi
--
Pressure Rating
psi
Note: Per SAE J518 (Code 61/62 flanges). Use torque wrench with calibrated readings. K=0.2 for lubricated bolts.

Reference

F_bolt = P × A_hyd + F_gasket | Torque = K × d × F/n / 12 | Gasket σ = F_total / A_gasket