Bend Radius Sheet Metal Thickness

The material thickness will be measured in decimal form not by the gauge number.

Bend radius sheet metal thickness.

The bending angle is 90 sheet thickness 5 mm and the inside radius is 6 mm. Recommended inside bend radius for sheet metal parts should be equal to material thickness. Crca inside bend radius equal to 0 65 times of sheet thickness is also enough. First we must start with the k factor.

The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance. You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k. 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. However it is important to know that this is just a broadly applicable rule of thumb you can follow for making bends in steel.

But for harder materials e g. 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. Sharp inside bend radius in sheetmetal parts can cause material flow problems in soft material and fracturing in hard material.

We are here to help. If you have any questions or want to discuss your design contact us. Choose a bend radius that matches your minimum bend.