Bend Radius Sheet Metal Metric

Sheet metal calculator bend allowance equations and calculator.

Bend radius sheet metal metric.

Radius metal will crack at the outside heel of the bend. The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance. Most sheet metal materials will conform to the calculations. Discover all our calculation tools in the calculators section of the top menu.

Preferred recommended 90 degree bend radii for various sheet metals. Bend allowance is the amount of metal to be added to the total layout. Cells on the right will output the desired values. Round up to the nearest v opening on the chart to match to your tooling.

Calculate your desired v opening based on the thickness of the sheet metal you re bending. You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k. 3 carbon 45 kg mm. The bend allowance added to the flange lengths is equal to the total flat length of the part.

If these guidelines are not followed more research and or some form of analysis may be requried. Therefore the bend deduction equals the difference between the mold line lengths and the total flat length. Radius of a bend is determined by the hardness and thickness of the metal. 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 following illustration shows the equation calculation for determining the bend allowance when forming sheet metal. Bend radii minimum bend sizes. Sheet metal bend radii. It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii.

This page also includes a link to a on line sheet metal bend allowance calculator. Calculate the ratio of the tensile strength of your material to the standard steel. 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. Where necessary 5052 h32 may be bent to 1t and 6061 t6 to 1 1 2t.

When bends are made smaller than the required min. The tool can calculate the required bending force for bending aluminum stainless steel mild steel and weldox or strenx high strength steels. Minimum bend includes minimum closeness of cutout to bend radius cold rolled steel 14 gauge 0 075 1 91mm. The material thickness will be measured in decimal form not by the gauge number.

The bend deduction sometimes called the bend compensation describes how much the outside of the sheet has been stretched. Steel american iron and steel institute.