Sheet Metal K Factor - Sheet metal thickness t = 1mm bend angle a = 90° bend radius r = 1mm bend allowance factor ba = 2.1mm. The formula to calculate the k factor is: Web based on the given information: Mathematically k factor value is equal to the ratio of position of the neutral axis and sheet thickness. When metal is bent the top section is going to undergo compression and the bottom section will be stretched.
Web based on the given information: Mathematically k factor value is equal to the ratio of position of the neutral axis and sheet thickness. When metal is bent the top section is going to undergo compression and the bottom section will be stretched. Sheet metal thickness t = 1mm bend angle a = 90° bend radius r = 1mm bend allowance factor ba = 2.1mm. The formula to calculate the k factor is: