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