Sheet Metal Bending Radius Chart

It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii.

Sheet metal bending radius chart.

Let s say i have a 2 mm thick sheet and i want to bend it. The gauge inside radius die opening and minimum flange length are all interconnected through different equations and relationships the air bend force. Being able to read a bend force chart is crucial for any brake press operator and sheet metal engineer. 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. The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance. The bend radii listed are standard minimum if manufacturing for aircraft and aerospace applications. It is possible to choose other bends if you require but additional lead time and tooling charges may apply.

Since commercial sheet metal bending can be done with less concern for stresses caused during forming operation the radius can be near zero for thin sheet metal. You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k. We go beyond the general rules of sheet metal bending as our customers want tight bend radii for sheet metal parts. The minimum bend radius data shown in these charts is measured to the inside of the bend.

Use this document to choose values that are both manufacturable and meet your needs. The tables below show bend radii and minimum bend sizes for materials and tooling combinations stocked by protocase.