If the product contains one or more sharp bends use the dimensions from the sharp tables for all bends in.
Minimum bend radius sheet metal steel.
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.
Brittle metal such as aluminum generally requires a larger bend radius than ductile material like cold rolled steel.
The minimum inside bend radius is even larger when bending with the grain.
Maximum dimensions are 2980 x 1200 mm.
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.
Use this document to choose values that are both manufacturable and meet your needs.
Maximum sheet thickness for all other steel is 6 mm.
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.
It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii.
It requires an inside bend radius of at least 6x the material thickness.
To keep it simple i also use a 2 mm inside radius.
Table 1 preferred recommended 90 degree bend radii for various sheet metals.
We go beyond the general rules of sheet metal bending as our customers want tight bend radii for sheet metal parts.
5052 h32 aluminum bends in about the same way as mild steel.
Recommended minimum bend radii for steel and aluminum.
3003 h14 is extremely ductile.
The bend radii listed are standard minimum if manufacturing for aircraft and aerospace applications.
The tool can calculate the required bending force for bending aluminum stainless steel mild steel and weldox or strenx high strength steels.
The tables below show bend radii and minimum bend sizes for materials and tooling combinations stocked by protocase.
Let s say i have a 2 mm thick sheet and i want to bend it.
The problem with bending too tightly.
These dimensions are all in relation to a 90 angle.
Maximum weight is 40 kg.
The minimum bend radius data shown in these charts is measured to the inside of the bend.
It is possible to choose other bends if you require but additional lead time and tooling charges may apply.
Aluminum where necessary 5052 h32 may be bent to 1t and 6061 t6 to 1 1 2t.
I can now see that the minimum flange length is 8 5 mm for such a bend so i have to keep it in mind when designing.
Maximum sheet thickness for aluminum and stainless steel is 6 mm.
This tool allows you to determine tonnage internal radius v die opening and minimum flange you just have to insert the characteristics of the sheet metal to be bent.
In steel between 0 5 and 0 8 in.
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.
