Minimum Bend Radius Steel Sheet

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

Minimum bend radius steel sheet.

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. This calculator predicts what the minimum bend radius should be to avoid chacking or orange peeling on the outside radius of the bend. Here again a minimum bend radius is not necessarily the same thing as a sharp bend. But for harder materials e g.

It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii. The problem with bending too tightly. If a piece of material is bent too tightly problems can occur. The minimum inside bend radius is even larger when bending with the grain.

The tables below show bend radii and minimum bend sizes for materials and tooling combinations stocked by protocase. Table 1 preferred recommended 90 degree bend radii for various sheet metals. Aluminum where necessary 5052 h32 may be bent to 1t and 6061 t6 to 1 1 2t. A sharp bend will always be less than a minimum bend radius but a minimum bend radius does not need to be sharp.

Discover all our calculation tools in the calculators section of the top menu. Recommended minimum bend radii for steel and aluminum. It is possible to choose other bends if you require but additional lead time and tooling charges may apply. In steel between 0 5 and 0 8 in.

Sheet metal bend radii if these guidelines are not followed more research and or some form of analysis may be requried. Use this document to choose values that are both manufacturable and meet your needs. Minimum inside bend radius for sheet metal recommended inside bend radius for sheet metal parts should be equal to material thickness. Bend radii minimum bend sizes.

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. 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. 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. 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.

To keep it simple i also use a 2 mm inside radius. The tool can calculate the required bending force for bending aluminum stainless steel mild steel and weldox or strenx high strength steels. We go beyond the general rules of sheet metal bending as our customers want tight bend radii for sheet metal parts.