It is possible to choose other bends if you require but additional lead time and tooling charges may apply.
Minimum bend radius aluminum sheet.
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.
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.
Table 1 preferred recommended 90 degree bend radii for various sheet metals.
Aluminum minimum bend radii for 90 degree cold forming of sheet and plate.
The minimum inside bend radius is even larger when bending with the grain.
If a piece of material is bent too tightly problems can occur.
It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii.
The bend radii listed are standard minimum if manufacturing for aircraft and aerospace applications.
The problem with bending too tightly.
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.
We go beyond the general rules of sheet metal bending as our customers want tight bend radii for sheet metal parts.
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.
Recommended minimum bend radii for 90 degree cold forming of sheet plate temper 1 64 in.
Aluminum where necessary 5052 h32 may be bent to 1t and 6061 t6 to 1 1 2t.
In steel between 0 5 and 0 8 in.
Recommended minimum bend radii for steel and aluminum.
The tables below show bend radii and minimum bend sizes for materials and tooling combinations stocked by protocase.
Crca inside bend radius equal to 0 65 times of sheet thickness is also enough.
The minimum bend radius for aluminum when working with aluminum over sheet metal several variables need to be considered.
Aluminum is typically thicker and stronger and requires more force to bend as well as consideration of edge conditions and punch nose radii.
Radii for various thicknesses expressed in terms of thickness t.
But for harder materials e g.
The minimum bend radius data shown in these charts is measured to the inside of the bend.
Bend radii minimum bend sizes.
