To ascertain your k factor inside radius and material thickness expressed as a decimal you should use an bend allowance chart.
Bending sheet steel with a small radius.
24 gauge 0 025 0 635 mm 0 265 6 73mm.
You can use this to put a perfectly clean 90 degree inside bend in steel bar or sheet of any width use a cutting disc to slot down through the plate at the.
24 gauge 0 025 0 635 mm 0 2 5 08mm.
For most applications with stainless steel or aluminum you can get away with a zero radius bend on anything under 0 050 thick.
If you re bending 0 020 thick material use a 0 020 radius.
The thickness of the metal.
As you can see below the difference between 3 and 6 bends is rather significant.
Choosing the right bend step is important because while more bends means a smoother radius it also means a more time consuming and technically difficult procedure.
The bend step is the number of bends which will be used to form the radius.
24 gauge 0 025 0 635 mm 0 5 12 7mm.
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 more bends the smoother the roll.
0 017453 x 90 x 0 020 0 33 x 0 024 0 0438558984 inch bend allowance.
There are a two major factors that affect how tight you can make the internal radius of a bend in a piece of sheet metal.
As an example if you want to bend 24 gauge sheet metal at a 90 angle the calculation would be.
The hardness of the metal.
Generally speaking the thicker a piece of sheet metal is the wider the internal bend radius will have to be.