Bend Radius Sheet Metal Table

A section view of a typical punch and die set used to create sheet metal bends.

Bend radius sheet metal table.

This springback and inside radius calculator estimates the amount of angular change and the relaxing of bend radius that occurs when metal is bent and released from pressure. Choose a bend radius that matches your minimum bend. Determine your minimum bend by measuring the distance from your closest feature i e. Sheet metal bend radii.

For example if the thickness of the sheet is 1 mm the minimum bend radius should be 1 mm. It is possible to choose other bends if you require but additional lead time and tooling charges may apply. This punch and die set would be mounted in a press. To keep it simple i also use a 2 mm inside radius.

You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k. Steel american iron and steel institute. We are here to help. To use the tables below.

Below is xometry s minimum bend radius reference table which is based on theoretical sheet metal gauge thicknesses. Another important consideration. The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance. A cutout or the edge of your flange to your bend.

When the proportional limits of a specific material are reached or exceeded the material remains bent figure one. Springback and inside radius calculator for sheet metal. 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 tables below show bend radii and minimum bend sizes for materials and tooling combinations stocked by protocase.

Let s say i have a 2 mm thick sheet and i want to bend it. If these guidelines are not followed more research and or some form of analysis may be requried. Figure 2 shows us a typical punch and die set used to bend sheet metal. The material thickness will be measured in decimal form not by the gauge number.

Where necessary 5052 h32 may be bent to 1t and 6061 t6 to 1 1 2t. Thus the smallest radius of any bend in a sheet should be at least equal to the thickness of the sheet. We go beyond the general rules of sheet metal bending as our customers want tight bend radii for sheet metal parts.