Bend Radius Sheet Metal Metric

The following illustration shows the equation calculation for determining the bend allowance when forming sheet metal.

Bend radius sheet metal metric.

Cells on the right will output the desired values. The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance. If these guidelines are not followed more research and or some form of analysis may be requried. The bend allowance added to the flange lengths is equal to the total flat length of the part.

Most sheet metal materials will conform to the calculations. Therefore the bend deduction equals the difference between the mold line lengths and the total flat length. When bends are made smaller than the required min. 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.

Preferred recommended 90 degree bend radii for various sheet metals. Use this document to choose values that are both manufacturable and meet your needs. 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.

Calculate the ratio of the tensile strength of your material to the standard steel. Steel american iron and steel institute. 3 carbon 45 kg mm. The material thickness will be measured in decimal form not by the gauge number.

Round up to the nearest v opening on the chart to match to your tooling. Sheet metal calculator bend allowance equations and calculator. Sheet metal bend radii. Minimum bend includes minimum closeness of cutout to bend radius cold rolled steel 14 gauge 0 075 1 91mm.

The most important considerations when bending metal is the min. Bend allowance is the amount of metal to be added to the total layout. This page also includes a link to a on line sheet metal bend allowance calculator. Calculate your desired v opening based on the thickness of the sheet metal you re bending.

You only have to insert interior angle flange lengths k factor inside radius and material thickness. Radius of a bend is determined by the hardness and thickness of the metal. Bend radii minimum bend sizes. Discover all our calculation tools in the calculators section of the top menu.

The tool can calculate the required bending force for bending aluminum stainless steel mild steel and weldox or strenx high strength steels. It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii.