Use this document to choose values that are both manufacturable and meet your needs.
Bend radius for sheet metal rule of thumb.
This value will vary by grade.
Also spaces between pierced holes and bends should accommodate the bend radius h and be far enough from the bend.
The stronger the material the larger the radius will be when using the same v opening.
Which can be then adjusted for other materials.
4 0 5 2.
If a piece of material is bent too tightly problems can occur.
If you re bending 0 020 thick material use a 0 020 radius.
Bending is one of the most common sheet metal fabrication operations.
A simple rule of thumb.
Now multiply that answer by the plate thickness.
The most common problem with bending a piece of sheet metal too tightly is.
Usually the preferred distance between holes and a bend is 1 5 times the sheet.
Bend radii minimum bend sizes.
It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii.
So in this case the minimum inside bend radius is 2 times the material thickness.
In other words if you re bending 1 8 sheet use a tool with a 1 8 radius to form the inside of the bend.
The distance between the sheet metal bend line and edge of the hole should be two times or greater the thickness of the sheet metal.
The more ductile the sheet metal the.
There s a rule of thumb to determine a steel s minimum bend radius and this generally works for aluminum too.
The inside bend radius should be equal to the thickness of the material that you re forming.
Also known as press braking flanging die bending folding and edging this method is used to deform a material to an angular shape.
Relief cuts for bends must be at least one sheet s thickness in width and be longer than the bend radius.
If the material is 0 5 in.
The force must exceed the material s yield strength to achieve a plastic deformation.
Note that this is just a rule of thumb.
Here s a good rule of thumb for most materials.
Minimum sheet metal bending radius.
The problem with bending too tightly.
Divide 50 by the material s tensile reduction percentage as specified by your supplier.
This is done through the application of force on a workpiece.
For thicknesses of mild steel up to in the radius r of a bend is normally 1 8 of the v opening resulting in this formula.
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.
R v 8.
Finding the true minimum bend radius for steel or aluminum plate requires a little research.
But the material s resistance or uts will affect the radius too.
Greg paulsen is director of applications engineering at xometry.
