Minimum Bend Radius Sheet Metal Metric

Minimum sheet metal flange bend length is required to avoid cracks in the bending area.

Minimum bend radius sheet metal metric.

Sophia will adjust the radii drawn in order to retain the shape of the final product. As this happens you gain a small amount of total length in your part. The thickness of the metal. Table 1 preferred recommended 90 degree bend radii for various sheet metals.

In steel between 0 5 and 0 8 in. Generally speaking the thicker a piece of sheet metal is the wider the internal bend radius will have to be. Bend radii minimum bend sizes. Similarly the harder a piece of metal is the more room.

Use this document to choose values that are both manufacturable and meet your needs. Recommended minimum bend radii for steel and aluminum. When the sheet metal is put through the process of bending the metal around the bend is deformed and stretched. It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii.

Bend radii minimum bend sizes. Sheet metal bend radii if these guidelines are not followed more research and or some form of analysis may be requried. Bend radii and minimum bends are limited to certain values or ranges which are determined by the equipment and tooling combinations available to the manufacturer. It shall be equal to three times of sheet thickness plus bend radius.

Discover all our calculation tools in the calculators section of the top menu. When designing sheet metal parts and enclosures it is helpful to use these values as the basis for your design. Specifing a bend radius from here will help prevent hair line cracks. The bend radii listed are standard minimum if manufacturing for aircraft and aerospace applications.

Thick grade 350 and 400 may have a minimum bend radius of 2 5 times the material thickness when transverse bending while longitudinal bending may require a minimum bend radius that s 3 75 times the material thickness see figure 1. The minimum inside bend radius is even larger when bending with the grain. There are a two major factors that affect how tight you can make the internal radius of a bend in a piece of sheet metal. 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 hole diameter guidelines. The internal radius is determined by the tools in conjunction with the material properties. At the minimum draw an internal radius of 0 5 sheet thickness in order to prevent problems with corners. Minimum sheet metal flange bend length 3 x sheet thickness bend radius.

The hardness of the metal. 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.