Recommended inside bend radius for sheet metal parts should be equal to material thickness.
Sheet metal bending radius chart in mm.
Crca inside bend radius equal to 0 65 times of sheet thickness is also enough.
Discover all our calculation tools in the calculators section of the top menu.
The tool can calculate the required bending force for bending aluminum stainless steel mild steel and weldox or strenx high strength steels.
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.
We go beyond the general rules of sheet metal bending as our customers want tight bend radii for sheet metal parts.
Use the minimum bend dimension values in the charts below for your minimum closeness of cutout to a bend.
The tables below show bend radii and minimum bend sizes for materials and tooling combinations stocked by protocase.
Table 1 preferred recommended 90 degree bend radii for various sheet metals.
Being able to read a bend force chart is crucial for any brake press operator and sheet metal engineer.
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.
But for harder materials e g.
The gauge inside radius die opening and minimum flange length are all interconnected through different equations and relationships the air bend force.
V die width is 6 8 times the plate thickness.
Calculate unfold size with bend allowance chart.
Cells on the right will output the desired values.
The material thickness will be measured in decimal form not by the gauge number.
The required die width is 12 mm and tonnage per meter is 22.
Sheet metal bend radii if these guidelines are not followed more research and or some form of analysis may be requried.
Material bend radii and minimum bend size charts please note.
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.
With this free online tool we quickly get the sheet metal bend deduction and therefore the sheet metal blank initial flat length from the finished part measurements.
Let s say i have a 2 mm thick sheet and i want to bend it.
You only have to insert interior angle flange lengths k factor inside radius and material thickness.
L unfold length a outside size b outside size k k factor none 90 bend unfold according to the neutral layer the distance from neutral to sheet inner side is t 3 inner r can refer to the above chart.
Specifing a bend radius from here will help prevent hair line cracks.
To keep it simple i also use a 2 mm inside radius.
It is possible to choose other bends if you require but additional lead time and tooling charges may apply.
Recommended minimum bend radii for steel and aluminum.
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.
