Aluminum Sheet Metal Bend Radius Chart

Radii for various thicknesses expressed in terms of thickness t.

Aluminum sheet metal bend radius chart.

The bend radii listed are standard minimum if manufacturing for aircraft and aerospace applications. Per the aluminum association inc. Sheet metal bend radii if these guidelines are not followed more research and or some form of analysis may be requried. Table 1 preferred recommended 90 degree bend radii for various sheet metals.

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 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 minimum bend radius data shown in these charts is measured to the inside of the bend. Use the minimum bend dimension values in the charts below for your minimum closeness of cutout to a bend.

We go beyond the general rules of sheet metal bending as our customers want tight bend radii for sheet metal parts. The material thickness will be measured in decimal form not by the gauge number. Material bend radii and minimum bend size charts please note. You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k.

Aluminum minimum bend radii for 90 degree cold forming of sheet and plate.