Sheet Metal Bend Radius Table

Table 1 14 minimum distance from the long round hole to the bend edge.

Sheet metal bend radius table.

We go beyond the general rules of sheet metal bending as our customers want tight bend radii for sheet metal parts. You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k. Figure 1 31 the minimum distance from the long round hole to the bend edge. 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.

It is possible to choose other bends if you require but additional lead time and tooling charges may apply. Bend radii minimum bend sizes. Bending is one of the most common sheet metal fabrication operations. We have a metal sheet of 3 m m thickness in iron with a hardness of 42 48kg mm2 if we go to the top of the table we see the thicknesses in brown we look at the 3 thickness of the sheet and we go down to the blue box we see a value of 240 this is in kn mm2 and if we take a 0 it will be in ton.

It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii. The tables below show bend radii and minimum bend sizes for materials and tooling combinations stocked by protocase. The second important number when creating sheet metal designs is the bend radius value. When the sheet metal is bent a bend radius is required at the bend.

The material thickness will be measured in decimal form not by the gauge number. Using a bend table in a sheet metal part. 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 bend radii listed are standard minimum if manufacturing for aircraft and aerospace applications.

This is done through the application of force on a workpiece. 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 minimum bend radius data shown in these charts is measured to the inside of the bend.

Table 1 preferred recommended 90 degree bend radii for various sheet metals. Exemple 1 for metal sheet bending tables. Sheet metal bend radii if these guidelines are not followed more research and or some form of analysis may be requried. Also known as press braking flanging die bending folding and edging this method is used to deform a material to an angular shape.

A section view of a typical punch and die set used to create sheet metal bends. The bend radius refer to table 1 9. The force must exceed the material s yield strength to achieve a plastic deformation.