Din 6935 Standard Pdf

DIN 6935

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

  1. DIN 6935 vs. DIN 6936: What's the Difference?

    Testing methods:

    Thickness Reduction:

    During the bending process, the material thickness in the rounded portion typically decreases by approximately 20% . Din 6935 Standard Pdf

    1. Scope: Application to sheets and strips made from unalloyed and low-alloy steels, hot or cold rolled.
    2. Normative References: Links to other critical standards (e.g., DIN EN 10051, DIN EN 10130).
    3. Definitions: Clear terminology for neutral axis, bend angle, bend radius, and leg length.
    4. Tolerances for Bent Angles: Specific angular deviations based on material thickness and bend length.
    5. Tolerances for Leg Lengths: Permissible variations in the straight sections of a bent part.
    6. Straightness and Flatness: Limits for twists and warpage after bending.
    7. Inner Radius Rules: Minimum recommended bend radii for various steel grades to prevent cracking.