Din 6935 Standard Pdf !!link!!
Compliance with DIN 6935 is often a contractual requirement in European automotive, aerospace, and industrial machinery sectors. Where to Source Official Copies
If you are outside Germany, you can buy the standard through your local national body (e.g., ANSI in the US, BSI in the UK, AFNOR in France). They resell DIN standards officially.
DIN 6935 references a specific list of materials commonly used for cold bending. The following table maps the steel grades to their corresponding groups in the standard:
It defines the minimum required length of the "leg" (the straight part of the bend) to ensure the bending tool can properly grip and form the material.
The main purpose of this standard is to provide a standardized approach to calculating how much material stretches during the bending process, allowing manufacturers to determine the exact size of the sheet metal before it is bent. Key Concepts in DIN 6935 1. Bending Allowance and Deduction Din 6935 Standard Pdf
In the world of precision manufacturing and mechanical engineering, few things are as frustrating as designing a bent sheet metal part only to find that the flattened blank does not fit, the holes are misaligned, or the final dimensions are wrong. This discrepancy occurs due to a phenomenon known as the K-factor or bend allowance—the stretching of material on the outer radius of a bend.
October 26, 2023 Subject: Review of DIN 6935 Standards for Cold Forming of Flat Steel Products Status: Withdrawn (Superseded by DIN EN ISO 13722)
◀--------- Leg Length 1 (b) ---------▶ _______________________________________ | | | _______________________________ | | / | | | / | | | / | | | | | | | | | | | | | | ▲ ▲ Thickness (s) Radius (r) ▼ ▼ The gauge or thickness of the raw sheet metal. Inside Bend Radius ( ): The radius of the internal curvature of the bend. Opening Angle ( ): The angle between the two bent legs of the part. Bending Angle ( ): The complementary angle to the opening angle (
: Use DIN 6935 for how to bend and what tolerance to expect . Use DIN 6936 for what steel to buy . Compliance with DIN 6935 is often a contractual
) with material thickness to prevent cracking on the outer tensile surface.
For mechanical bending, the standard suggests a minimum leg length ( ) of approximately 4 times the bending radius ( ) to prevent defects. Thickness Reduction: It accounts for a material thickness (
| Standard | Focus Area | Role in Conjunction with DIN 6935 | | :--- | :--- | :--- | | | Delivery technical conditions for stamped steel parts | Defines material properties and manufacturing requirements for stamped parts | | DIN 6930-2 | General tolerances for stamped steel parts | Defines general tolerances; DIN 6935 supersedes its angular tolerance tables for bends | | DIN 6932 | Design rules for stamped steel parts | Provides complementary design guidelines for parts that may include bends | | DIN 8588 | Manufacturing processes separation - Classification | Classifies manufacturing processes that precede or follow bending operations |
: Accounts for how the material's "neutral axis" shifts during the bending process, which affects the final length of the legs Permissible Deviations DIN 6935 references a specific list of materials
: Bending angle in degrees (the angle of the bend itself, not the opening angle). : Inside bend radius. : Material thickness. : The correction factor (
If you are searching for the "DIN 6935 Standard PDF" to get the raw data, here are the core formulas and tables you will find inside.
Using standard guidelines like DIN 6935 removes guesswork from the manufacturing cycle.
