Bend Radius Sheet Metal Thickness

The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance.

Bend radius sheet metal thickness.

We want to know the final length of the detail. Sharp inside bend radius in sheetmetal parts can cause material flow problems in soft material and fracturing in hard material. But for harder materials e g. You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k.

The bending angle is 90 sheet thickness 5 mm and the inside radius is 6 mm. 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. First we must start with the k factor.

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. The material thickness will be measured in decimal form not by the gauge number. Determine your minimum bend by measuring the distance from your closest feature i e. We are here to help.

If you have any questions or want to discuss your design contact us. However it is important to know that this is just a broadly applicable rule of thumb you can follow for making bends in steel. Another way to determine the k factor is by following the rule of thumb.