Bend Radius Sheet Metal Thickness

Sharp inside bend radius in sheetmetal parts can cause material flow problems in soft material and fracturing in hard material.

Bend radius sheet metal thickness.

If you have any questions or want to discuss your design contact us. A cutout or the edge of your flange to your bend. We are here to help. 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. Determine your minimum bend by measuring the distance from your closest feature i e. Another way to determine the k factor is by following the rule of thumb. First we must start with the k factor.

Recommended inside bend radius for sheet metal parts should be equal to material thickness. 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. 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 material thickness will be measured in decimal form not by the gauge number. You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k. Choose a bend radius that matches your minimum bend.