Minimum Bend Radius Steel Sheet

In steel between 0 5 and 0 8 in.

Minimum bend radius steel sheet.

Sheet metal bend radii if these guidelines are not followed more research and or some form of analysis may be requried. The minimum inside bend radius is even larger when bending with the grain. A sharp bend will always be less than a minimum bend radius but a minimum bend radius does not need to be sharp. The bend radii listed are standard minimum if manufacturing for aircraft and aerospace applications.

It is possible to choose other bends if you require but additional lead time and tooling charges may apply. 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. But for harder materials e g. Table 1 preferred recommended 90 degree bend radii for various sheet metals.

We go beyond the general rules of sheet metal bending as our customers want tight bend radii for sheet metal parts. Use this document to choose values that are both manufacturable and meet your needs. Aluminum where necessary 5052 h32 may be bent to 1t and 6061 t6 to 1 1 2t. Minimum inside bend radius for sheet metal recommended inside bend radius for sheet metal parts should be equal to material thickness.

Here again a minimum bend radius is not necessarily the same thing as a sharp bend. It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii. The tool can calculate the required bending force for bending aluminum stainless steel mild steel and weldox or strenx high strength steels. The tables below show bend radii and minimum bend sizes for materials and tooling combinations stocked by protocase.

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. The problem with bending too tightly. This calculator predicts what the minimum bend radius should be to avoid chacking or orange peeling on the outside radius of the bend. Bend radii minimum bend sizes.

To keep it simple i also use a 2 mm inside radius. Discover all our calculation tools in the calculators section of the top menu. 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. The minimum bend radius data shown in these charts is measured to the inside of the bend.

If a piece of material is bent too tightly problems can occur. Crca inside bend radius equal to 0 65 times of sheet thickness is also enough. 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.