Bend Radius Sheet Metal Thickness

The bending angle is 90 sheet thickness 5 mm and the inside radius is 6 mm.

Bend radius sheet metal thickness.

We go beyond the general rules of sheet metal bending as our customers want tight bend radii for sheet metal parts. The tables below show bend radii and minimum bend sizes for materials and tooling combinations stocked by protocase. Use this document to choose values that are both manufacturable and meet your needs. If you are working with a material thickness of 0 100 in multiply that by 0 63 to get a minimum inside bend radius of 0 063 in.

First we must start with the k factor. We want to know the final length of the detail. The bend radius refers to the inside radius. The thickness of the metal.

The material thickness will be measured in decimal form not by the gauge number. The bend radii listed are standard minimum if manufacturing for aircraft and aerospace applications. Similarly the harder a piece of metal is the more room you ll have to allocate for the bend as well or risk fracturing the sheet metal. It is possible to choose other bends if you require but additional lead time and tooling charges may apply.

Recommended inside bend radius for sheet metal parts should be equal to material thickness. The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance. The formed bend radius is dependent upon the dies used the material properties and the material thickness. The hardness of the metal.

When sheet metal is bent it stretches in length. The bend deduction is the amount the sheet metal will stretch when bent as measured from the outside edges of the bend. It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii. You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k.

For this material this is the minimum producible inside radius with air forming. But for harder materials e g. The minimum bend radius data shown in these charts is measured to the inside of the bend. Crca inside bend radius equal to 0 65 times of sheet thickness is also enough.

Let s say you have a similar part to the one on the image above it has a straight leg of 20 mm and another of 70 mm.