Sheet Metal Bending Inner Radius

Use this document to choose values that are both manufacturable and meet your needs.

Sheet metal bending inner radius.

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 minimum bend radius for mild steel sheet metal should be equal to the thickness. You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k.

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. First we must start with the k factor. Flat sheet 90 degrees bend angle. 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 bending angle is 90 sheet thickness 5 mm and the inside radius is 6 mm. 0 972 0 16 the inside bend radius changes to 0 155. If you re working with 304 stainless steel multiply its median percentage value 21 percent by the die opening. Minimum bend includes minimum closeness of cutout to bend radius cold rolled steel 14 gauge 0 075 1 91mm.

Bend radii minimum bend sizes. The minimum inside bend radius is even larger when bending with the grain. If the die opening is 0 551 in. It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii.

The material thickness will be measured in decimal form not by the gauge number. The sheet metal design rule of thumb in this case is. We want to know the final length of the detail. The data in the above table is the preferred data and is for reference only.

Let s start with 90 degrees bend which is the most simple scenario. In steel between 0 5 and 0 8 in. Therefore the bending inner radius of our sheet metal parts is basically 0 2. Discover all our calculation tools in the calculators section of the top menu.

The more ductile the sheet metal the smaller the inner bend radius is possible. The tool can calculate the required bending force for bending aluminum stainless steel mild steel and weldox or strenx high strength steels.