Sheet Metal Bending Inner Radius

You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k.

Sheet metal bending inner radius.

First we must start with the k factor. Thick grade 350 and 400 may have a minimum bend radius of 2 5 times the material thickness when transverse bending while longitudinal bending may require a minimum bend radius that s 3 75 times the material thickness see figure 1. The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance. Bend radii minimum bend sizes.

If the die opening is 0 972 in. The minimum inside bend radius is even larger when bending with the grain. Use this document to choose values that are both manufacturable and meet your needs. 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.

In steel between 0 5 and 0 8 in. If the die opening is 0 551 in. Let s start with 90 degrees bend which is the most simple scenario. It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii.

0 972 0 16 the inside bend radius changes to 0 155. Therefore the bending inner radius of our sheet metal parts is basically 0 2. Minimum bend includes minimum closeness of cutout to bend radius cold rolled steel 14 gauge 0 075 1 91mm. The minimum bend radius for mild steel sheet metal should be equal to the thickness.

The bending tool has a radius of 30 mm which means that our inside bend radius r is 30 mm. Flat sheet 90 degrees bend angle. The tool can calculate the required bending force for bending aluminum stainless steel mild steel and weldox or strenx high strength steels. Discover all our calculation tools in the calculators section of the top menu.

The bending angle is 90 sheet thickness 5 mm and the inside radius is 6 mm. The data in the above table is the preferred data and is for reference only. The material thickness will be measured in decimal form not by the gauge number. The more ductile the sheet metal the smaller the inner bend radius is possible.

0 551 0 16 the inside bend radius changes to 0 088. We want to know the final length of the detail.