Sheet Metal K Factor Chart

It allows you to anticipate the bend deduction for a large variety of angles without having to rely on a chart.

Sheet metal k factor chart.

The k factor is fundamental to designing precise sheet metal products. Because of the specific properties of any given metal there is no easy way to calculate that value perfectly hence the chart in figure 2. The k factor is the most important and elusive variable of bending because it varies both as a function of the material and according to parameters such as angle and tooling. As a result overall sheet length increases.

K factor chart a k factor will typically range between 0 and 5 for standard materials and thicknesses though smaller and larger k factors are possible. To help you begin i ve included a k factor chart below which contains common k factor starting points good for general fabrication for steel aluminum and stainless steel. K factor in sheet metal bending is a constant that is used to calculate sheet metal flat length. You can use this k factor calculator to calculate k factor using reverse engineering method.

This change in sheet length depends on the position of neutral axis or k factor. Sheet metal flat length can be calculated using cad softwares. So if the thickness of the sheet was a distance of t 1 mm and the location of the neutral axis was a distance of t 0 5 mm measured from the inside bend then you would have a k factor of t t 0 5 1 0 5. For example if the value of k factor for given material thickness and bending machines is known.

K factor a constant determined by dividing the thickness of the sheet by the location of the neutral axis which is the part of sheet metal that does not change length. The k factor is defined as the ratio between the material thickness t and the neutral fibre axis t i e. The k factor is usually somewhere between 0 3 and 0 5. The part of the material that bends.

While modern bend deduction charts now are reasonably accurate historically bend calculation charts both for bend allowances and bend deductions were notorious for their inaccuracies. A k factor will typically range between 0 and 5 for standard materials and thicknesses though smaller and larger k factors are possible. To help you begin i ve included a k factor chart below which contains common k factor starting points good for general fabrication for steel aluminum and stainless steel. Therefore using k factor there is no need to calculate sheet metal flat length manually.

Calculate k factor bend allowance and y factor for sheet metal bending.