Sheet Metal Bending Radius Chart

It is possible to choose other bends if you require but additional lead time and tooling charges may apply.

Sheet metal bending radius chart.

You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k. The material thickness will be measured in decimal form not by the gauge number. To keep it simple i also use a 2 mm inside radius. An air bend force chart or force chart breaks down a number of key components of sheet metal bending in an easy to reference format.

The gauge inside radius die opening and minimum flange length are all interconnected through different equations and relationships the air bend force. Bend radii minimum bend sizes. It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii. We go beyond the general rules of sheet metal bending as our customers want tight bend radii for sheet metal parts.

Being able to read a bend force chart is crucial for any brake press operator and sheet metal engineer. I can now see that the minimum flange length is 8 5 mm for such a bend so i have to keep it in mind when designing. The minimum bend radius data shown in these charts is measured to the inside of the bend. The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance.

Use this document to choose values that are both manufacturable and meet your needs. The bend radii listed are standard minimum if manufacturing for aircraft and aerospace applications.