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Corus Markets New HyPerform Steel Grade
04/05/2010 - Corus claims to be first to market with a new grade of steel—dual phase (DP) 800HyPerform—designed specifically for the automotive industry. The steel grade’s minimum ultimate tensile strength is 780 MPa, and it offers extra ductility for good formability and weldability.
Corus claims to be first to market with a new grade of steel—dual phase (DP) 800HyPerform, an advanced high-strength steel designed specifically for the automotive industry.
DP800HyPerform® is said to combine the strength levels of a DP800 grade with the formability properties of a DP600 grade, without compromising on weldability. Corus developed this grade in cooperation with a number of automotive OEMs, specifically to make lightweight automotive parts such as structural members and reinforcements that also must be crash-resistant.
The steel grade’s minimum ultimate tensile strength is 780 MPa, similar to that of Corus’s existing DP800 grade. The difference, says Corus, is that DP800HyPerform offers extra ductility, resulting in good formability in combination with good weldability, which makes it suitable for complex shaped stamped parts. The steel is available as hot dipped galvanized material and fulfils all typical automotive processing requirements.
The steel’s improved formability results in higher processing yield and enables part consolidation. DP800HyPerform also has a hot dipped galvanized zinc coating, which incurs a lower cost than electrolytically galvanized zinc coating that is required for TRIP steels, for example, says Corus.
“We are often faced with the apparent paradox of vehicle manufacturers wanting materials that have better crash resistance and offer improved press shop performance, but that at the same time can be supplied at lower cost,” said Maurice van Giezen, Manager of Corus Automotive Business Development. “By combining the benefits of a number of different grades of steel into one product, DP800HyPerform achieves all three of these objectives."
The product has been successfully trialed and is now on sale. Corus says the new grade is due to be introduced into several car models in the near future.
Corus, part of the Tata Steel Group, is one of the leading suppliers of steel products, solutions, and technology to the automotive industry. Corus steels, ranging from strip and engineering steels to tubes, are used by customers to make products that are used in body-in-white, closures, chassis and suspension systems, powertrain, seating systems, safety systems, interior trim, and other components. Corus is Europe's second largest steel producer.
