# Thickness of shells under internal pressure for Conical Heads

## Values for calculation

$E$
$P$ $\mathrm{MPa}$
$T$ $\mathrm{°C}$
$D$ $\mathrm{mm}$
$α$ $\mathrm{°}$
$t_s$ $\mathrm{mm}$
$S$ $\mathrm{MPa}$

## Calculation

### Minimum required thickness of head after forming

$$t=\cfrac{P\cdot D}{2\cdot\cos{α}\cdot\left(S\cdot E-0.6\cdot P\right)}$$$$t_s\geq t$$