It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii.
Minimum bend radius sheet metal chart.
In general parts should be designed with a minimum 1t bend radius radius matching the sheet thickness for the simplest setup and to ensure we can form the intended geometry.
Bend radii minimum bend sizes.
Specifing a bend radius from here will help prevent hair line cracks.
The minimum bend radius data shown in these charts is measured to the inside of the bend.
Aluminum is typically thicker and stronger and requires more force to bend as well as consideration of edge conditions and punch nose radii.
An air bend force chart or force chart breaks down a number of key components of sheet metal bending in an easy to reference format.
The bend radii listed are standard minimum if manufacturing for aircraft and aerospace applications.
When working with aluminum over sheet metal several variables need to be considered.
Being able to read a bend force chart is crucial for any brake press operator and sheet metal engineer.
It requires an inside bend radius of at least 6x the material thickness.
This free chart outlines what bend radii is required for the approximate thickness of aluminum.
The gauge inside radius die opening and minimum flange length are all interconnected through different equations and relationships the air bend force.
Radius is the minimum producible inside radius for this material and not the recommended inside radius that you see on the bend allowance chart.
Bend radii and minimum bends are limited to certain values or ranges which are determined by the equipment and tooling combinations available to the manufacturer.
It s true that the harder and thicker the plate is the greater the minimum bend radius.
For example 6061 t6 aluminum is very difficult to bend.
In general mild steel and type 304 stainless sheet can be formed with sharp bends 1t without concern up to 1 8 thick.
When designing sheet metal parts and enclosures it is helpful to use these values as the basis for your design.
Recommended minimum bend radii for steel and aluminum.
The minimum inside bend radius is even larger when bending with the grain.
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.
We recommend printing it out to keep as a reference.
The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance.
3003 h14 is extremely ductile.
5052 h32 aluminum bends in about the same way as mild steel.
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 material thickness will be measured in decimal form not by the gauge number.
You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k.
