thyssenkrupp Hohenlimburg GmbH (Hagen, Germany):

M. Nagel, e-mail: maximilian.nagel@thyssenkrupp.com

J. Driessen

St. Kovacz

O. Pudritz

A. Tomitz
H. Rackow

H. Denecke-Arnold

High-ductile HD-steels are distinguished by the best combination of high strength, deformability and weldability for the widespread use in the automotive industry. They are used by manufacturers of safety elements, from seat adjustment mechanisms and gas generator for airbags to undercarriage components such as axles and even transmission elements, friction discs and gear shift forks (Fig. 13). Bainitic HBS steels are used predominantly in the undercarriage elements, transverse suspension arms and welded axles, due to the high maximum hole expansion ratio in combination with excellent weldability and strength. Another example: bumpers and seat belt fittings.

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