Bending Aluminum Sheet Minimum Radius

The tables below show bend radii and minimum bend sizes for materials and tooling combinations stocked by protocase.

Bending aluminum sheet minimum radius.

Let s say i have a 2 mm thick sheet and i want to bend it. Radii for various thicknesses expressed in terms of thickness t. Use this document to choose values that are both manufacturable and meet your needs. The minimum bend radius for aluminum when working with aluminum over sheet metal several variables need to be considered.

Still if you want to avoid cracking abide by the minimum bend radius in 0 25 in thick 6061 t6 which is quite large see figure 3 and avoid bending acute angles. Sheet metal bend radii if these guidelines are not followed more research and or some form of analysis may be requried. The minimum bend radius data shown in these charts is measured to the inside of the bend. In steel between 0 5 and 0 8 in.

Say you get a print that says you need to bend a part to an external angle of 100 degrees that s an internal angle of just 80 degrees. To keep it simple i also use a 2 mm inside radius. 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.

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. Aluminum is typically thicker and stronger and requires more force to bend as well as consideration of edge conditions and punch nose radii. 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. 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.

Discover all our calculation tools in the calculators section of the top menu. We go beyond the general rules of sheet metal bending as our customers want tight bend radii for sheet metal parts. Bend radii minimum bend sizes. The minimum inside bend radius is even larger when bending with the grain.

Aluminum where necessary 5052 h32 may be bent to 1t and 6061 t6 to 1 1 2t. It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii. Recommended minimum bend radii for steel and aluminum. Aluminum minimum bend radii for 90 degree cold forming of sheet and plate.

Per the aluminum association inc.