Din 6935 Standard Pdf Now
cold bending of flat steel products
DIN 6935 is the primary German technical standard for the . It is widely used in steel construction and mechanical engineering to determine minimum bending radii, calculate the "developed length" (flat length) of parts before they are bent, and define permissible tolerances. 1. Key Technical Specifications
) , often referred to as the K-factor. This factor shifts based on the ratio of the bending radius to the material thickness ( Formula for Stretched Length ( Din 6935 Standard Pdf
- Material Thickness ($s$)
- Bend Radius ($r$)
- Bend Angle ($\alpha$)
- Scope: Application to sheets and strips made from unalloyed and low-alloy steels, hot or cold rolled.
- Normative References: Links to other critical standards (e.g., DIN EN 10051, DIN EN 10130).
- Definitions: Clear terminology for neutral axis, bend angle, bend radius, and leg length.
- Tolerances for Bent Angles: Specific angular deviations based on material thickness and bend length.
- Tolerances for Leg Lengths: Permissible variations in the straight sections of a bent part.
- Straightness and Flatness: Limits for twists and warpage after bending.
- Inner Radius Rules: Minimum recommended bend radii for various steel grades to prevent cracking.
Benefits and Importance
Why is DIN 6935 Critical?
3.1 Minimum Bending Radii