SZBS800: Hot-rolled high-strength bainitic steel now available as electrolytic galvanized version

20.10.2021 | Salzgitter Flachstahl GmbH


The bainitic high-tech hot strip steel is a multiphase steel which is now also available in a single- or double-sided galvanized version. The electrolytically applied zinc coating enables the targeted setting of excellent corrosion protection. The unique structure is particularly resistant, features excellent forming properties and can be trimmed and then even be subjected to further forming. In technological terms, the material is characterized by a very high yield strength and tensile strength in connection with sufficiently high elongation at break for cold forming processes. The very good forming properties of the SZBS800 basic grade have been retained in the electrolytically galvanized version. 

The material exhibits the following positive properties: 

  • Excellent cathodic corrosion protection 
  • Increased hole expansion in the xpand®-Variant for particularly low edge crack sensitivity 
  • Process-reliable production of very complex component geometries in connection with concurrent high strength 
  • Exceptional potential for component integration 
  • High fatigue strength, especially under dynamic loads 
  • Lightweight potential thanks to sheet thickness reduction and material-specific design 
  • Very good weldability 


The SZBS800+ZE product is available in electrolytically galvanized versions on one and both sides. All common zinc coatings are available in accordance with VDA 239-100. Optional phosphating (SZBS800+ZE P) minimizes abrasion of the anti-corrosion zinc layer during forming.

The grade SZBS800+ZE material finds preferential use chassis applications and is a problem solver when it comes to absorbing higher loads, as encountered due to increased vehicle weight in electromobility, for example.

The given option of single-sided galvanizing means that non-porous gas-shielded welding can still be carried out on the non-galvanized side; this enables an extended range of applications, which was previously impossible with material galvanized on both sides due to the joining technique.

Thanks to its high fatigue strength, SZBS800+ZE is particularly suitable for use in chassis parts subject to high dynamic stresses. At the same time, these applications benefit from the weight-saving potential due to the high material strength. Typical examples of applications are transverse and longitudinal control arms as well as track or spring control arms. 

For more information on SZBS800+ZE please refer to our Product page or our respective Material information sheet.

Should you have any questions or require further information our technical customer service and the Sales department will be pleased to be of assistance in all matters.