Sanitary Sheet Metal Bend Radius

The minimum bend radius data shown in these charts is measured to the inside of the bend.

Sanitary sheet metal bend radius.

Minimum recommended sheet metal bend length. In this case the minimum producible inside bend radius is 63 percent of that 0 250 in. The tables below show bend radii and minimum bend sizes for materials and tooling combinations stocked by protocase. Bending is one of the most common sheet metal fabrication operations.

Below is xometry s minimum bend radius reference table which is based on. Thus the smallest radius of any bend in a sheet should be at least equal to the thickness of the sheet. The bend radius refers to the inside radius. When sheet metal is bent it stretches in length.

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. As another example say you re working with 0 125 in thick material. The bend deduction is the amount the sheet metal will stretch when bent as measured from the outside edges of the bend.

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. This is done through the application of force on a workpiece. Material thickness or 0 1575 in. It is possible to choose other bends if you require but additional lead time and tooling charges may apply.

Bend radius throughout the sheet metal design is kept constant to take the advantage of using the same tool during manufacturing. Bend radii minimum bend sizes. Use this document to choose values that are both manufacturable and meet your needs. We go beyond the general rules of sheet metal bending as our customers want tight bend radii for sheet metal parts.

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. Also known as press braking flanging die bending folding and edging this method is used to deform a material to an angular shape. The bend radii listed are standard minimum if manufacturing for aircraft and aerospace applications. The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance.

For example if the thickness of the sheet is 1 mm the minimum bend radius should be 1 mm. 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. We recommend a minimum bend radius of 1t for all sheet metal parts. The force must exceed the material s yield strength to achieve a plastic deformation.

Minimum sheet metal bend length recommendations. The material thickness will be measured in decimal form not by the gauge number.