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Axle crossmember

Axle crossmember - RobuSal®800 and SZBS800

Salzgitter Flachstahl’s air-hardening steel grade RobuSal®800 was especially developed for the automotive industry. This grade meets customer demands for lighter construction, better operational strength and excellent crash behavior. 

Given its remarkable characteristics, RobuSal®800 meets the latest requirements for automotive materials with regard to safety and lightweight construction potential.

Foto von einem Integralträger aus RobuSal800

RobuSal®800

RobuSal®800 meets customer demands for lighter construction, better operational strength and excellent crash behavior. » more

With its SZBS800 and SZBS600 grades, Salzgitter Flachstahl has developed two innovative bainitic hot-rolled steels which belong to the group of complex-phase steels. These materials are predestined for use in dynamically stressed components.

Bainitic steels

Bainitic steels are predestined for use in dynamically stressed components. » more


Application: Axle crossmember (potential analysis)

Lightweight construction with RobuSal®800 and SZBS800 as Tailor Welded Blank using the example of the axle crossmember (potential analysis).

Photo of an axle crossmember

Idea: use tailor welded blanks with highest-strength steels in the example

  • RobuSal®800 (sheet thickness: 2.3 mm) in the weld seam area due to excellent vibration resistance properties in the welded state
  • SZBS800 (sheet thickness 2.0 mm) in the middle area due to minimal edge cracking sensitivity in highly stressed zones 

Result:

  • Weight savings of 18 percent
  • Proof of manufacturability
  • Continuous vibration test of the rear axle support successfully completed

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