Commercial sheet metal radius are created with less concern for stresses created during forming and radii can approach zero sharp internal corner for many thin sheet metal gages.
2024 sheet metal bend radius.
Aluminum minimum bend radii for 90 degree cold forming of sheet and plate.
The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance.
You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k.
The brake radius bars of a sheet metal brake can be replaced with another brake radius bar with a different diameter.
The bend radii listed are standard minimum if manufacturing for aircraft and aerospace applications.
3003 0 1100 0 6061 s0 5052 s0.
Table 1 preferred recommended 90 degree bend radii for various sheet metals.
Specifing a bend radius from here will help prevent hair line cracks.
Apart from alloy selection thickness and bend radius are also critical factors that must be considered.
It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii.
It is possible to choose other bends if you require but additional lead time and tooling charges may apply.
The bend radii listed are standard minimum for manufacturing for aerospace and space applications.
Per the aluminum association inc.
Use this document to choose values that are both manufacturable and meet your needs.
The table below shows the permitted bend radii for 90 o bending.
We go beyond the general rules of sheet metal bending as our customers want tight bend radii for sheet metal parts.
Sheet metal bend radii if these guidelines are not followed more research and or some form of analysis may be requried.
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.
Radii for various thicknesses expressed in terms of thickness t.
The tables below show bend radii and minimum bend sizes for materials and tooling combinations stocked by protocase.
Figure 2 for example a 0 032 inch 2024 t3 l channel needs to be bent with a radius of 1 8 inch and a radius bar with a 1 8 inch radius must be installed.
Factor 2 thickness and bend radius.
2024 t3 1020 1025 4130 ann.
Another factor to consider is that during the process of bending the metal hardens and strengthens by reason of the working effect.
