Sanitary Sheet Metal Bend Radius

In this example the inside radius is 0 157 in which at 63 percent material thickness is the minimum inside radius that can be achieved where the bend turns sharp.

Sanitary sheet metal bend radius. It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii. Use this document to choose values that are both manufacturable and meet your needs. In this case the minimum producible inside bend radius is 63 percent of that 0 250 in. Material thickness or 0 1575 in.

The tables below show bend radii and minimum bend sizes for materials and tooling combinations stocked by protocase. Thus the smallest radius of any bend in a sheet should be at least equal to the thickness of the sheet. For more on sharp bends see how the inside bend radius forms actual machine input depth dp di rp 0 03. This is done through the application of force on a workpiece.

Bend radii minimum bend sizes. The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance. We recommend a minimum bend radius of 1t for all sheet metal parts. Also known as press braking flanging die bending folding and edging this method is used to deform a material to an angular shape.

We go beyond the general rules of sheet metal bending as our customers want tight bend radii for sheet metal parts. Bend radius throughout the sheet metal design is kept constant to take the advantage of using the same tool during manufacturing. You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k. Below is xometry s minimum bend radius reference table which is based on.

Since commercial sheet metal bending can be done with less concern for stresses caused during forming operation the radius can be near zero for thin sheet metal. Minimum sheet metal flange bend length is required to avoid cracks in the bending area. The material thickness will be measured in decimal form not by the gauge number. The force must exceed the material s yield strength to achieve a plastic deformation.

The bend radius refers to the inside radius. Regardless of what s called on the print this setup will produce an inside bend radius in the part much greater than that of the punch nose. Bending is one of the most common sheet metal fabrication operations. When sheet metal is bent it stretches in length.

Minimum sheet metal bend length recommendations. Minimum recommended sheet metal bend length. The formed bend radius is dependent upon the dies used the material properties and the material thickness. The minimum bend radius data shown in these charts is measured to the inside of the bend.

It is possible to choose other bends if you require but additional lead time and tooling charges may apply. For example if the thickness of the sheet is 1 mm the minimum bend radius should be 1 mm.