Bend Radius Sheet Metal Metric

Bend allowance is the amount of metal to be added to the total layout.

Bend radius sheet metal metric. Bend radii and minimum bends are limited to certain values or ranges which are determined by the equipment and tooling combinations available to the manufacturer. Sheet metal bend radii if these guidelines are not followed more research and or some form of analysis may be requried. Use this document to choose values that are both manufacturable and meet your needs. Recommended minimum bend radii for steel and aluminum.

With this free online tool we quickly get the sheet metal bend deduction and therefore the sheet metal blank initial flat length from the finished part measurements. The material thickness will be measured in decimal form not by the gauge number. Internal radius 90 degrees. 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.

Table 1 preferred recommended 90 degree bend radii for various sheet metals. The most important considerations when bending metal is the min. Specifing a bend radius from here will help prevent hair line cracks. You only have to insert interior angle flange lengths k factor inside radius and material thickness.

When designing sheet metal parts and enclosures it is helpful to use these values as the basis for your design. When bends are made smaller than the required min. For reference these internal radii can be used for an angle of 90 degrees. The d10 tools are used to bend u shapes of up to 5 mm for steel and up to 4 mm for stainless steel.

The bend deduction sometimes called the bend compensation describes how much the outside of the sheet has been stretched. You just have to insert the characteristics of the sheet metal to be bent. Bend radii minimum bend sizes. The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance.

Therefore the bend deduction equals the difference between the mold line lengths and the total flat length. Cells on the right will output the desired values. At the minimum draw an internal radius of 0 5 sheet thickness in order to prevent problems with corners. Radius metal will crack at the outside heel of the bend.

Radius of a bend is determined by the hardness and thickness of the metal. You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k. Sheet metal bending parameters calculator this tool allows you to determine tonnage internal radius v die opening and minimum flange.