Let s say i have a 2 mm thick sheet and i want to bend it.
Sheet metal bending radius chart in mm.
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.
The gauge inside radius die opening and minimum flange length are all interconnected through different equations and relationships the air bend force.
It is possible to choose other bends if you require but additional lead time and tooling charges may apply.
Cells on the right will output the desired values.
Table 1 preferred recommended 90 degree bend radii for various sheet metals.
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.
We go beyond the general rules of sheet metal bending as our customers want tight bend radii for sheet metal parts.
The tool can calculate the required bending force for bending aluminum stainless steel mild steel and weldox or strenx high strength steels.
The required die width is 12 mm and tonnage per meter is 22.
Bend forming 0 l a b 0 43t t thickness deduction 0 43t.
Being able to read a bend force chart is crucial for any brake press operator and sheet metal engineer.
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.
Use the minimum bend dimension values in the charts below for your minimum closeness of cutout to a bend.
Sheet metal bend radii if these guidelines are not followed more research and or some form of analysis may be requried.
Calculate unfold size with bend allowance chart.
Material bend radii and minimum bend size charts please note.
To keep it simple i also use a 2 mm inside radius.
Recommended minimum bend radii for steel and aluminum.
But for harder materials e g.
Crca inside bend radius equal to 0 65 times of sheet thickness is also enough.
The material thickness will be measured in decimal form not by the gauge number.
Specifing a bend radius from here will help prevent hair line cracks.
You only have to insert interior angle flange lengths k factor inside radius and material thickness.
Discover all our calculation tools in the calculators section of the top menu.
The tables below show bend radii and minimum bend sizes for materials and tooling combinations stocked by protocase.
V die width is 6 8 times the plate thickness.
The bend radius you select may not be available if the geometry of the part will not allow us to bend with the specific tooling required to achieve that radius.
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.
