Calculate Radius Sheet Metal

Choose a bend radius that matches your minimum bend.

Calculate radius sheet metal.

Bend radii minimum bend sizes. A sharp bend will always be less than a minimum bend radius but a minimum bend radius does not need to be sharp. Sheet metal calculator bend allowance equations and calculator. Input material thickness and and inner radius to get the data of k factor y factor neutral layer.

You only have to insert interior angle flange lengths k factor inside radius and material thickness. Then input the bend angle to get the arc length bend allowance and bend deduction. Cells on the right will output the desired values. This calculator predicts what the minimum bend radius should be to avoid chacking or orange peeling on the outside radius of the bend.

Most sheet metal materials will conform to the calculations. Here again a minimum bend radius is not necessarily the same thing as a sharp bend. The following illustration shows the equation calculation for determining the bend allowance when forming sheet metal. Whereas the outer surface is stretched.

To calculate r which is the radius of the arc on the neutral axis we can use the following equation. Ultimate tensile strength psi. Then input leg length a and b to get the flat size of the sheet. A cutout or the edge of your flange to your bend.

And by having t and the sheet thickness t we can calculate the k factor as follow. As a result overall sheet length increases. This page also includes a link to a on line sheet metal bend allowance calculator. Determine your minimum bend by measuring the distance from your closest feature i e.

Punch edge radius in. A is the bending angle in the above equation so. This change in sheet length depends on the position of neutral axis or k factor. Die edge radius in.

When sheet metal is bend the inside bending surface is compressed.