Stronger, lighter steel developed for automotive industry

Tata Steel has developed a new grade of steel for the automotive industry. The move is in response to market requirements for stronger and lighter steels.

Its DP1000HY-GI is a high-yield, ultra high-strength steel will allow manufacturers to make lighter components without altering production facilities. The material is ideally suited for the crash-protection structure of a vehicle, and claims weight saving can be up to 15%.

Its superior formability makes it suitable for creating relatively complex shapes and can be processed by existing machinery, a critical consideration in its development. DP1000HY can endure high stress during deformation and therefore absorbs more energy during a crash impact. It is most suitable for making components such as A and B pillar reinforcements, sills, door beams and cross members.

Sander Heinhuis, Tata Steel's European marketing manager for automotive, said: "Tata Steel has combined high yield, ultra high strength and formability, allowing automotive manufacturers to reduce the thickness of the steel they use."

DP1000HY steel incorporates carbon and manganese to increase its strength and hardenability. It is finished with a hot-dipped galvanised coating, offering good corrosion protection. This latest addition to Tata Steel's range of dual-phase steels means the company now offer three strength levels of 600, 800 and 1,000MPa.

Justin Cunningham

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