Bend Radius Sheet Metal Metric

The bend allowance formula takes into account the geometries of bending and the properties of your metal to determine the bend allowance.

Bend radius sheet metal metric.

You will need to know your material thickness mt the bend angle b the inside radius ir and the k factor k. 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. Radius of a bend is determined by the hardness and thickness of the metal. Steel american iron and steel institute.

The following illustration shows the equation calculation for determining the bend allowance when forming sheet metal. 3 carbon 45 kg mm. Calculate your desired v opening based on the thickness of the sheet metal you re bending. Use this document to choose values that are both manufacturable and meet your needs.

The most important considerations when bending metal is the min. Radius metal will crack at the outside heel of the bend. Sheet metal calculator bend allowance equations and calculator. The material thickness will be measured in decimal form not by the gauge number.

This page also includes a link to a on line sheet metal bend allowance calculator. Sheet metal bend radii. Therefore the bend deduction equals the difference between the mold line lengths and the total flat length. Bend allowance is the amount of metal to be added to the total layout.

The tool can calculate the required bending force for bending aluminum stainless steel mild steel and weldox or strenx high strength steels. The bend deduction sometimes called the bend compensation describes how much the outside of the sheet has been stretched. If these guidelines are not followed more research and or some form of analysis may be requried. Round up to the nearest v opening on the chart to match to your tooling.

Preferred recommended 90 degree bend radii for various sheet metals. When bends are made smaller than the required min. The bend allowance added to the flange lengths is equal to the total flat length of the part. Where necessary 5052 h32 may be bent to 1t and 6061 t6 to 1 1 2t.

You only have to insert interior angle flange lengths k factor inside radius and material thickness. Cells on the right will output the desired values. It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii. Discover all our calculation tools in the calculators section of the top menu.

Bend radii minimum bend sizes. Calculate the ratio of the tensile strength of your material to the standard steel.