Mild Steel Sheet Metal Bend Radius

In steel between 0 5 and 0 8 in.

Mild steel sheet metal bend radius.

As you can see below the relationship between the inside radius and the v opening occurs because the sheet metal has more room to bend. 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. Use this document to choose values that are both manufacturable and meet your needs. It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii.

I don t know of a formula for the relationship between the v opening and the inside radius but then again this is why bend force charts are created to help you fill in the blanks. First we must start with the k factor. In the example above it is indicated by a dashed blue line. In our example below a part with flange lengths of 2 and 3 with an inside radius of 250 at 90 will have leg lengths of 1 625 and 2 625 respectively.

In the example above it is indicated by a dashed blue line. Grain direction is formed in metal in the direction in which the sheet was rolled at the steel mill. Minimum bend includes minimum closeness of cutout to bend radius cold rolled steel 14 gauge 0 075 1 91mm. This tool allows you to determine tonnage internal radius v die opening and minimum flange you just have to insert the characteristics of the sheet metal to be bent.

The minimum inside bend radius is even larger when bending with the grain. Thick grade 350 and 400 may have a minimum bend radius of 2 5 times the material thickness when transverse bending while longitudinal bending may require a minimum bend radius that s 3 75 times the material thickness see figure 1. The bending angle is 90 sheet thickness 5 mm and the inside radius is 6 mm. The bend allowance is the amount of the neutral axis that bends.

When we calculate the bend allowance we find that it equals 457. It s true that the harder and thicker the plate is the greater the minimum bend radius. We want to know the final length of the detail. The leg lengths are the part of the flange which is outside of the bend radius.

The tool can calculate the required bending force for bending aluminum stainless steel mild steel and weldox or strenx high strength steels. Although it is an option for calculating a bend in some cad programs such as solid works it is not often referred to in the actual manufacturing process since.