Minimum Radius Sheet Metal Bends

The bend radii listed are standard minimum if manufacturing for aircraft and aerospace applications.

Minimum radius sheet metal bends.

The minimum bend radius data shown in these charts is measured to the inside of the bend. The problem with bending too tightly. If a piece of material is bent too tightly problems can occur. I can now see that the minimum flange length is 8 5 mm for such a bend so i have to keep it in mind when designing.

But for harder materials e g. Let s say i have a 2 mm thick sheet and i want to bend it. It is most economical to use a single bend radius throughout the. Crca inside bend radius equal to 0 65 times of sheet thickness is also enough.

Commonly used bends include v bend z bend offset bend and hemming bend etc. 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. To keep it simple i also use a 2 mm inside radius. 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.

Layout method sheet metal stretches when it bends is an oversimplification. For bent sheet metal variation in the raw material thickness increases the recommended precision to 0 010 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. Use this document to choose values that are both manufacturable and meet your needs.

Bend radii minimum bend sizes. Thereby forming a certain angle and curvature shape. Curls the minimum radius is two times the. In low carbon steel sheet metal the minimum radius of a bend should be one half the material thickness or 0 80 mm 0 03 inch whichever is larger.

Each and every bend in a piece of sheet metal has a certain minimum internal radius that needs to be taken into account when planning the design of a sheet metal form. Minimum inside bend radius for sheet metal recommended inside bend radius for sheet metal parts should be equal to material thickness. In steel between 0 5 and 0 8 in. When designing sheet metal parts and enclosures it is helpful to use these values as the basis for your design.

Bending is a stamping process that uses pressure to force the material to plastically deform. Bends specified as angles may be toleranced at plus or minus one half degree at a location adjacent to the bends. The minimum inside bend radius is even larger when bending with the grain.