Sheet Metal K Factor Chart

Sheet metal flat length can be calculated using cad softwares.

Sheet metal k factor chart.

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 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.

A k factor will typically range between 0 and 5 for standard materials and thicknesses though smaller and larger k factors are possible. Therefore using k factor there is no need to calculate sheet metal flat length manually. 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. Cad tools use k factor to calculate sheet metal blank.

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. You can use this k factor calculator to calculate k factor using reverse engineering method. The k factor is usually somewhere between 0 3 and 0 5. The k factor is defined mathematically as t mt where t is the neutral axis location and mt is the material thickness.

The part of the material that bends. K factor in sheet metal bending is a constant that is used to calculate sheet metal flat length. 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. 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.

As a result overall sheet length increases. 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. It allows you to anticipate the bend deduction for a large variety of angles without having to rely on a chart. Calculate k factor bend allowance and y factor for sheet metal bending.

The k factor is defined as the ratio between the material thickness t and the neutral fibre axis t i e.