Community Research and Development Information Service - CORDIS


Researchers aimed at developing a low-alloy, weldable steel, which combined high strength and formability, and could be produced by both hot and cold strip rolling. The project investigated the enrichment of the steel's carbon content by promoting the 'TRIP-effect', whereby heating the steel to around 800ºC transforms the existing austenite in the steel compound into the harder martensite. This principle can be applied in both hot- and cold-strip steel production, and has undergone laboratory and industrial testing. Production trials carried out in a hot rolling mill using a steel without added silicon showed retained austenite levels of up to 17%, and the product was both flexible and strong. The steel produced by this process is highly sensitive to deviations in the production process, however, but it does have potential with regard to controlling the distribution of carbon concentrations throughout the steel, thereby increasing its strength. It is anticipated that this steel will be used in automotive production.

Additional information

Authors: EHRHARDT B, Thyssen Stahl AG, Duisburg (DE)
Bibliographic Reference: EUR 18557 DE (1998)
Availability: Available from OOPEC Sales agents
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