Sheet Metal Bend Radius Vs Thickness

It is possible to choose other bends if you require but additional lead time and tooling charges may apply.

Sheet metal bend radius vs thickness.

4 0 5 2. If minimum flange requirement is too close you can choose r t 2 also and suitable die. The hardness of the metal. The bend deduction is the amount the sheet metal will stretch when bent as measured from the outside edges of the bend.

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. The tables below show bend radii and minimum bend sizes for materials and tooling combinations stocked by protocase. It depends which material you are bending and what is the requirement.

You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k. The thickness of the metal. It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii. The formed bend radius is dependent upon the dies used the material properties and the material thickness.

If the material is 0 5 in. This apply for sheet metal with 2 mm and lesser and obvious tonnage of the machine wi. Use this document to choose values that are both manufacturable and meet your needs. You described a rough rule to find a steel s minimum bend radius.

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. Bend radii minimum bend sizes. We want to know the final length of the detail. So in this case the minimum inside bend radius is 2 times the material thickness.

For this material this is the minimum producible inside radius with air forming. The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance. Now multiply that answer by the plate thickness. When sheet metal is bent it stretches in length.

In a previous bending basics article you mention a material s tensile reduction percentage used for calculating the minimum inside bend radius of various metals. Divide 50 by the material s reduction percentage as specified by the material supplier subtract by 1 and then multiply by the plate thickness. Generally speaking the thicker a piece of sheet metal is the wider the internal bend radius will have to be. The material thickness will be measured in decimal form not by the gauge number.

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. Finding the true minimum bend radius for steel or aluminum plate requires a little research. The bending angle is 90 sheet thickness 5 mm and the inside radius is 6 mm.