The Role of DIN 6935 in Precision Engineering The standard is a critical technical framework that governs the cold bending of flat rolled steel products within the mechanical engineering and steel construction industries. Its primary function is to provide standardized methods for calculating "developed lengths" (the flat state of a part before it is bent) while ensuring structural integrity by specifying minimum bending radii. Core Technical Specifications

[ A = \pi \cdot (r + v \cdot s) \cdot \frac\beta180 ]

= 90° to 165° : Uses an adjusted formula including trigonometric functions. > 165° : The compensation value is considered for practical purposes. The Correction Factor (

| Standard | Scope | | :--- | :--- | | | Tolerances for bent parts made from flat steel | | ISO 2768 | General tolerances for machined & formed parts (not bending-specific) | | DIN 6930 | Tolerances for stamped and formed parts from sheet metal |

To find the total length of the flat sheet needed, the standard uses the formula: Elongated length Elongated length equals a plus b plus u are the straight leg lengths and compensation value Compensation Value ( This value changes depending on the opening angle ( 0 raised to the composed with power 65 raised to the composed with power can be positive or negative. 65 raised to the composed with power is exclusively negative. 165 raised to the composed with power 180 raised to the composed with power is typically considered negligible (set to 0). Correction Factor ( Also known as the