Bend Radius Sheet Metal Thickness

A cutout or the edge of your flange to your bend.

Bend radius sheet metal thickness.

Choose a bend radius that matches your minimum bend. Another way to determine the k factor is by following the rule of thumb. The bending angle is 90 sheet thickness 5 mm and the inside radius is 6 mm. Sharp inside bend radius in sheetmetal parts can cause material flow problems in soft material and fracturing in hard material.

The material thickness will be measured in decimal form not by the gauge number. First we must start with the k factor. However it is important to know that this is just a broadly applicable rule of thumb you can follow for making bends in steel. The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance.

Crca inside bend radius equal to 0 65 times of sheet thickness is also enough. So if the metal plate is 75 thick you would multiply 4 x 75 3 so your minimum inside bend radius would be roughly 3 times the thickness of the material in this case or 2 25. Minimum bend includes minimum closeness of cutout to bend radius cold rolled steel 14 gauge 0 075 1 91mm. Recommended inside bend radius for sheet metal parts should be equal to material thickness.

We are here to help. You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k. But for harder materials e g.