Sheet Metal Bending Inner Radius

In steel between 0 5 and 0 8 in.

Sheet metal bending inner radius.

0 972 0 16 the inside bend radius changes to 0 155. Discover all our calculation tools in the calculators section of the top menu. Bend radii minimum bend sizes. Therefore the bending inner radius of our sheet metal parts is basically 0 2.

If the die opening is 0 551 in. The bending angle is 90 sheet thickness 5 mm and the inside radius is 6 mm. The minimum inside bend radius is even larger when bending with the grain. 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.

If you re working with 304 stainless steel multiply its median percentage value 21 percent by the die opening. It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii. The minimum bend radius for mild steel sheet metal should be equal to the thickness. 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. The data in the above table is the preferred data and is for reference only. The bending tool has a radius of 30 mm which means that our inside bend radius r is 30 mm. 0 551 0 16 the inside bend radius changes to 0 088.

The sheet metal design rule of thumb in this case is. If the die opening is 0 972 in. The material thickness will be measured in decimal form not by the gauge number. This tool allows you to determine tonnage internal radius v die opening and minimum flange you just have to insert the characteristics of the sheet metal to be bent.

Flat sheet 90 degrees bend angle. You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k. We want to know the final length of the detail. The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance.

Minimum bend includes minimum closeness of cutout to bend radius cold rolled steel 14 gauge 0 075 1 91mm. First we must start with the k factor.