Steel Sheet Metal Bend Radius Chart

Therefore the bend allowance added to the flange lengths is equal to the total flat.

Steel sheet metal bend radius chart.

The bend radius you select may not be available if the geometry of the part will not allow us to bend with the specific tooling required to achieve that radius. You described a rough rule to find a steel s minimum bend radius. The minimum bend radius data shown in these charts is measured to the inside of the bend. Let s say i have a 2 mm thick sheet and i want to bend it.

It is possible to choose other bends if you require but additional lead time and tooling charges may apply. The gauge inside radius die opening and minimum flange length are all interconnected through different equations and relationships the air bend force. Use the minimum bend dimension values in the charts below for your minimum closeness of cutout to a bend. Table 1 preferred recommended 90 degree bend radii for various sheet metals.

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. The tables below show bend radii and minimum bend sizes for materials and tooling combinations stocked by protocase. The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance. 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.

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. Divide 50 by the material s reduction percentage as specified by the material supplier subtract by 1 and then multiply by the plate thickness. A section view of a typical punch and die set used to create sheet metal bends.

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. The bend radii listed are standard minimum if manufacturing for aircraft and aerospace applications. Being able to read a bend force chart is crucial for any brake press operator and sheet metal engineer. To keep it simple i also use a 2 mm inside radius.

The bend allowance and bend deduction are two measures that relate the bent length of a piece of sheet metal to the flat length. The second important number when creating sheet metal designs is the bend radius value. Material bend radii and minimum bend size charts please note. Sheet metal bend radii if these guidelines are not followed more research and or some form of analysis may be requried.

We go beyond the general rules of sheet metal bending as our customers want tight bend radii for sheet metal parts. The material thickness will be measured in decimal form not by the gauge number.