Aluminum minimum bend radii for 90 degree cold forming of sheet and plate.
Aluminum sheet metal bend radius chart.
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.
The minimum bend radius data shown in these charts is measured to the inside of the bend.
We go beyond the general rules of sheet metal bending as our customers want tight bend radii for sheet metal parts.
You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k.
Radii for various thicknesses expressed in terms of thickness t.
The bend radius you select may not be available if the geometry of the part will not allow us to bend with the specific tooling required to achieve that radius.
The tables below show bend radii and minimum bend sizes for materials and tooling combinations stocked by protocase.
Sheet metal bend radii if these guidelines are not followed more research and or some form of analysis may be requried.
Per the aluminum association inc.
Use the minimum bend dimension values in the charts below for your minimum closeness of cutout to a bend.
The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance.
The material thickness will be measured in decimal form not by the gauge number.