Bend Radius Copper Sheet

Since commercial sheet metal bending can be done with less concern for stresses caused during forming operation the radius can be near zero for thin sheet metal.

Bend radius copper sheet.

It is the smallest inside bend radius that you can place in a piece of material before the tensile forces on the outside of the bend begin to tear the grains in the material apart. The problem with bending too tightly. The bend radii listed are standard minimum if manufacturing for aircraft and aerospace applications. If copper has to be bent a factor of 1 5 must be used.

We want to know the final length of the detail. The bending angle is 90 sheet thickness 5 mm and the inside radius is 6 mm. Each and every bend in a piece of sheet metal has a certain minimum internal radius that needs to be taken into account when planning the design of a sheet metal form. The tables below show bend radii and minimum bend sizes for materials and tooling combinations stocked by protocase.

For example the minimum bending radius of aluminium is determined by multiplying the sheet thickness by a factor of 2. But for harder materials e g. Crca inside bend radius equal to 0 65 times of sheet thickness is also enough. The bend radius you select may not be available if the geometry of the part will not allow us to bend with the specific tooling required to achieve that radius.

It is normally expressed in terms of multiples of the material thickness e g. If a piece of material is bent too tightly problems can occur. If your bend radius needs to be adjusted a member of engineering design services team will contact you before your design is manufactured. Sharp inside bend radius in sheetmetal parts can cause material flow problems in soft material and fracturing in hard material.

The minimum bend radius data shown in these charts is measured to the inside of the bend. Recommended inside bend radius for sheet metal parts should be equal to material thickness. In this case the minimum radius equals the respective sheet thickness. 0 017453 x 90 x 0 020 0 33 x 0 024 0 0438558984 inch bend allowance.

To ascertain your k factor inside radius and material thickness expressed as a decimal you should use an bend allowance chart. What is the minimum radius. It is possible to choose other bends if you require but additional lead time and tooling charges may apply. First we must start with the k factor.

If the punch nose radius. We go beyond the general rules of sheet metal bending as our customers want tight bend radii for sheet metal parts.