Recommended minimum bend radii for steel and aluminum.
Minimum bend radius aluminum sheet.
If a piece of material is bent too tightly problems can occur.
Aluminum is typically thicker and stronger and requires more force to bend as well as consideration of edge conditions and punch nose radii.
It is possible to choose other bends if you require but additional lead time and tooling charges may apply.
Per the aluminum association inc.
Minimum inside bend radius for sheet metal recommended inside bend radius for sheet metal parts should be equal to material thickness.
The minimum bend radius for aluminum when working with aluminum over sheet metal several variables need to be considered.
In steel between 0 5 and 0 8 in.
It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii.
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.
The bend radii listed are standard minimum if manufacturing for aircraft and aerospace applications.
The minimum bend radius data shown in these charts is measured to the inside of the bend.
Bend radii minimum bend sizes.
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.
Crca inside bend radius equal to 0 65 times of sheet thickness is also enough.
But for harder materials e g.
Aluminum minimum bend radii for 90 degree cold forming of sheet and plate.
The problem with bending too tightly.
O 0 0 0 1t 1t 1t 11 2t 2t t4 0 0 1t 11 2 t21 2 3t 31 2t 4t t6 1t 1t 11 2t 21 2t 3t 31 2 t41 2 5t.
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.
We go beyond the general rules of sheet metal bending as our customers want tight bend radii for sheet metal parts.
Aluminum where necessary 5052 h32 may be bent to 1t and 6061 t6 to 1 1 2t.
Radii for various thicknesses expressed in terms of thickness t.
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.
