High-strength steel tubes for automotive structures

SSAB offers Docol^® automotive tubes engineered for use in vehicle safety systems and load-bearing structures. The product range targets applications across passenger cars, commercial vehicles and motorsport, where strength, dimensional precision and material consistency are required for structural performance.

Mechanical performance and material properties
Docol^® automotive tubes are available with tensile strengths ranging from 490 MPa to 980 MPa, enabling high structural performance without the need for additional heat treatment processes. This supports efficient manufacturing while maintaining required mechanical characteristics for safety-relevant components.

The tubes are typically produced from cold-rolled steel and manufactured as longitudinally welded profiles. Production follows EN 10305-3, with compliance to enhanced elongation requirements (CR2+) and strict chemical composition specifications. For automotive applications, the materials also meet the requirements of VDA 239-100.

Dimensional flexibility and design integration
The product range includes circular, square and rectangular tube geometries, as well as application-specific profiles. This dimensional flexibility supports integration into a wide range of structural components, including frames, reinforcements and chassis elements.

Tight dimensional tolerances and consistent mechanical properties enable reliable forming and joining processes, contributing to repeatable manufacturing outcomes in automotive production.




Surface coatings and corrosion protection
Docol^® tubes are available with multiple coating options to address corrosion resistance requirements in different operating environments. These include zinc (GI), Galfan^® (ZA) and galvannealed (GA) coatings, allowing adaptation to specific durability and lifecycle targets.

Applications in automotive manufacturing
The combination of high strength, surface quality and dimensional accuracy makes the tubes suitable for safety-critical and structural applications. Typical use cases include vehicle frames, chassis components and reinforcement structures where performance and reliability are essential.

By combining material performance with manufacturing consistency, Docol^® automotive tubes support the development of next-generation vehicles within an increasingly data-driven automotive production environment.

Edited by Maria Brueva, Induportals editor – adapted by AI.

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