Minimum Bend Radius Sheet Metal Metric

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 bend radius sheet metal metric.

The hardness of the metal. When designing sheet metal parts and enclosures it is helpful to use these values as the basis for your design. The minimum inside bend radius is even larger when bending with the grain. The thickness of the metal.

Bend radii minimum bend sizes. Table 1 preferred recommended 90 degree bend radii for various sheet metals. It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii. Understanding the bend allowance and consequently the bend deduction of a part is a crucial first step to understanding how sheet metal parts are fabricated.

When the sheet metal is put through the process of bending the metal around the bend is deformed and stretched. Minimum sheet metal flange bend length 3 x sheet thickness bend radius. Bend radii minimum bend sizes. As this happens you gain a small amount of total length in your part.

Discover all our calculation tools in the calculators section of the top menu. Generally speaking the thicker a piece of sheet metal is the wider the internal bend radius will have to be. 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. At the minimum draw an internal radius of 0 5 sheet thickness in order to prevent problems with corners.

In steel between 0 5 and 0 8 in. 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. It shall be equal to three times of sheet thickness plus bend radius. Sophia will adjust the radii drawn in order to retain the shape of the final product.

The tool can calculate the required bending force for bending aluminum stainless steel mild steel and weldox or strenx high strength steels. 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. 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.

Minimum sheet metal flange bend length is required to avoid cracks in the bending area. Recommended minimum bend radii for steel and aluminum. Minimum hole diameter guidelines. Use this document to choose values that are both manufacturable and meet your needs.

The internal radius is determined by the tools in conjunction with the material properties. Specifing a bend radius from here will help prevent hair line cracks.