A36 Sheet Metal Bend Radius

The same inside bend radius cannot be used for all steel grades.

A36 sheet metal bend radius.

For example using a steel plate an ibr recommendation of 1 5t would equal an inside bend radius of 3 8 250 x 1 5 375. Bend radii minimum bend sizes. The perfect bend has a radius that s equal or close to the material thickness. Plug the bend allowance ba the bend angle b inside radius ir and material thickness mt into the below equation to determine the k factor k.

Divide 50 by the material s reduction percentage as specified by the material supplier subtract by 1 and then multiply by the plate thickness. It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii. There are inside bend radius recommendations listed for some of the steel grades that we stock. Specifically the perfect bend s radius ranges from the minimum radius value up to 125 percent of the material thickness.

It also contains the use of astm a36 such as it is commonly used in bars sheet plates steel coils steel pipes forged and other materials application. The tables below show bend radii and minimum bend sizes for materials and tooling combinations stocked by protocase. In a previous bending basics article you mention a material s tensile reduction percentage used for calculating the minimum inside bend radius of various metals. For our example it comes to.

Specifing a bend radius from here will help prevent hair line cracks. Try forming a radius smaller than the minimum and you crease the center of the radius giving you a sharp bend. This page is mainly introduced the astm a36 datasheet including chemical information mechanical properties physical properties mechanical properties heat treatment and micro structure etc. 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.

4 1 893 2 214. You described a rough rule to find a steel s minimum bend radius. Table 1 preferred recommended 90 degree bend radii for various sheet metals. Recommended minimum bend radii for steel and aluminum.

If your radius is 125. Subtract twice the leg length from the initial length to determine the bend allowance. Use this document to choose values that are both manufacturable and meet your needs. We go beyond the general rules of sheet metal bending as our customers want tight bend radii for sheet metal parts.

The bend radii listed are standard minimum if manufacturing for aircraft and aerospace applications. The minimum bend radius data shown in these charts is measured to the inside of the bend.