Metric Sheet Metal Bend Radius Table

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

Metric sheet metal bend radius table.

Where necessary 5052 h32 may be bent to 1t and 6061 t6 to 1 1 2t. The bend deduction sometimes called the bend compensation describes how much the outside of the sheet has been stretched. The tool can calculate the required bending force for bending aluminum stainless steel mild steel and weldox or strenx high strength steels. The second important number when creating sheet metal designs is the bend radius value.

The bend radius of a sheet metal design will be based on the wall thickness of the part and the tooling that is available in house. Sheet metal bend radius chart metric written by kupis on july 3 2020 in chart metal sheet bending table calculating bend allowance bending basics the fundamentals of k factor in sheet metal bending how to calculate press brake tonnage. Sheet metal bend radius. The material thickness will be measured in decimal form not by the gauge number.

Therefore the bend deduction equals the difference between the mold line lengths and the total flat length. Being able to read a bend force chart is crucial for any brake press operator and sheet metal engineer. It is possible to choose other bends if you require but additional lead time and tooling charges may apply. If these guidelines are not followed more research and or some form of analysis may be requried.

Preferred recommended 90 degree bend radii for various sheet metals. Steel american iron and steel institute. An air bend force chart or force chart breaks down a number of key components of sheet metal bending in an easy to reference format. You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k.

The gauge inside radius die opening and minimum flange length are all interconnected through different equations and relationships the air bend force. It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii. The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance. Use this document to choose values that are both manufacturable and meet your needs.

The tables below show bend radii and minimum bend sizes for materials and tooling combinations stocked by protocase. 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. Discover all our calculation tools in the calculators section of the top menu. The bend allowance added to the flange lengths is equal to the total flat length of the part.