Sheet Metal Bend Radius Table

Consider what minimum bend size you require only consider lines that meet your minimum bend requirement.

Sheet metal bend radius table.

In fact the manufacturer s bending knives usually have a rounded corner of 0 3 and a small number of bending knives have a rounded corner of 0 5. To use the tables below. We want to know the final length of the detail. 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.

Where necessary 5052 h32 may be bent to 1t and 6061 t6 to 1 1 2t. You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k. Figure 2 shows us a typical punch and die set used to bend sheet metal. The bend radii listed are standard minimum if manufacturing for aircraft and aerospace applications.

If you have multiple options optimize your choice. The bending angle is 90 sheet thickness 5 mm and the inside radius is 6 mm. Preferred recommended 90 degree bend radii for various sheet metals. 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.

The material thickness will be measured in decimal form not by the gauge number. If these guidelines are not followed more research and or some form of analysis may be requried. Another way to determine the k factor is by following the rule of thumb. Steel american iron and steel institute.

Therefore the bending inner radius of our sheet metal parts is basically 0 2. The data in the above table is the preferred data and is for reference only. This punch and die set would be mounted in a press. It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii.

Sheet metal bend radii. Bend radii minimum bend sizes. Use this document to choose values that are both manufacturable and meet your needs. The gauge inside radius die opening and minimum flange length are all interconnected through different equations and relationships the air bend force.

A section view of a typical punch and die set used to create sheet metal bends. Refer to table s for your choice of material. The bend radius of a sheet metal design will be based on the wall thickness of the part and the tooling that is available in house. First we must start with the k factor.

The minimum bend radius data shown in these charts is measured to the inside of the bend. You may choose any bend radius on this line s.