Standard Bending Radius For Sheet Metal

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

Standard bending radius for sheet metal.

The material thickness will be measured in decimal form not by the gauge number. 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. Usually the preferred distance between holes and a bend is 1 5 times the sheet thickness plus the bend radius 1 5t h. Sheet metal bend radii if these guidelines are not followed more research and or some form of analysis may be requried.

You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k. Material thickness or 0 1575 in. As another example say you re working with 0 125 in thick material. Bend radii minimum bend sizes.

This is done through the application of force on a workpiece. We go beyond the general rules of sheet metal bending as our customers want tight bend radii for sheet metal parts. Recommended minimum bend radii for steel and aluminum. Supplying 3d models without considering these factors increases the chance.

The force must exceed the material s yield strength to achieve a plastic deformation. Sheet metal bend brakes are used to bend material into the parts desired geometry. The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance. Regardless of what s called on the print this setup will produce an inside bend radius in the part much greater than that of the punch nose.

But for harder materials e g. Bending is one of the most common sheet metal fabrication operations. Also known as press braking flanging die bending folding and edging this method is used to deform a material to an angular shape. Specifing a bend radius from here will help prevent hair line cracks.

The tables below show bend radii and minimum bend sizes for materials and tooling combinations stocked by protocase. In this case the minimum producible inside bend radius is 63 percent of that 0 250 in. Table 1 preferred recommended 90 degree bend radii for various sheet metals. Crca inside bend radius equal to 0 65 times of sheet thickness is also enough.

The bend radii listed are standard minimum if manufacturing for aircraft and aerospace applications. Bends that are in the same plane need to be designed in the same direction to avoid part re orientation to save both money and time. Use this document to choose values that are both manufacturable and meet your needs. The minimum bend radius data shown in these charts is measured to the inside of the bend.