The material thickness will be measured in decimal form not by the gauge number.
Bend radius sheet metal metric.
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 the second important number when creating sheet metal designs is the bend radius value.
The most important considerations when bending metal is the min.
You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k.
For reference these internal radii can be used for an angle of 90 degrees.
Table 1 preferred recommended 90 degree bend radii for various sheet metals.
Specifing a bend radius from here will help prevent hair line cracks.
Radius of a bend is determined by the hardness and thickness of the metal.
You only have to insert interior angle flange lengths k factor inside radius and material thickness.
Therefore the bend deduction equals the difference between the mold line lengths and the total flat length.
Radius metal will crack at the outside heel of the bend.
It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii.
Sheet metal bend radii if these guidelines are not followed more research and or some form of analysis may be requried.
At the minimum draw an internal radius of 0 5 sheet thickness in order to prevent problems with corners.
The bend deduction sometimes called the bend compensation describes how much the outside of the sheet has been stretched.
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.
Sheet metal bending parameters calculator this tool allows you to determine tonnage internal radius v die opening and minimum flange.
Bend radii minimum bend sizes.
Cells on the right will output the desired values.
When bends are made smaller than the required min.
When designing sheet metal parts and enclosures it is helpful to use these values as the basis for your design.
Bend allowance is the amount of metal to be added to the total layout.
Recommended minimum bend radii for steel and aluminum.
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.
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.
The bend allowance added to the flange lengths is equal to the total flat length of the part.
