-(220-x-200-px)-(130-x-130-px)-(220-x-200-px).jpg?lang=en-US&ext=.jpg)
Veolia.gif?width=200&height=200&mediaprotectionhash=4deca34a0d5a00013b5a0ccdc2dcf98fd2c17aabb57eb7bbb27200552f29c247&ext=.gif)
Posco Develops Ultra High Strength Steel for Automobiles
11/09/2009 - Posco develops pickled and oiled steel sheets of 980-MPa-class ultra high strength steel that can withstand pressures of 100 kg/mm2, in response to the automotive industry trend to apply lightweight parts to increase fuel efficiency.
Posco successfully developed pickled and oiled (PO) steel sheets of 980-MPa-class ultra high strength steel (UHSS) that can withstand pressures of 100 kg/mm2. The company says it developed the product in response to the automotive industry trend to apply lightweight parts to increase fuel efficiency.
Two types of 980-MPa-class UHSS have been developed: DP (dual phase) steel and FB (ferrite bainite) steel. DP steels, with their excellent formability and good fatigue resistance, are suitable for automotive parts such as torsion beam axle, Posco says, while FB steels have a high Hole Expansion Ratio and are appropriate for parts such as wheel disks.
In 2007, Posco developed a 780-MPa-class UHSS that can withstand pressures of up to 80 kg/mm2; it has found application in small-sized vehicles. The company notes that a joint research program is in progress with automotive companies to enhance the application of 780-MPa-class hot-rolled materials, and to collaborate for the weight reduction of automotive structures for new vehicle projects after 2011.
Posco also developed 590-MPa-class galvannealed steel sheets for automotive outer body panels for the first time. This product, which can withstand pressures of up to 60 kg/mm2, is reportedly 70% stronger than the existing 340-MPa-class outer steel panels, allowing a reduction of thickness.
The company plans to continue promoting the application of the 980-MPa-class UHSS through its Early Vendor Involvement activities with automobile manufacturers.
In 2007, Posco developed a 780-MPa-class UHSS that can withstand pressures of up to 80 kg/mm2; it has found application in small-sized vehicles. The company notes that a joint research program is in progress with automotive companies to enhance the application of 780-MPa-class hot-rolled materials, and to collaborate for the weight reduction of automotive structures for new vehicle projects after 2011.
Posco also developed 590-MPa-class galvannealed steel sheets for automotive outer body panels for the first time. This product, which can withstand pressures of up to 60 kg/mm2, is reportedly 70% stronger than the existing 340-MPa-class outer steel panels, allowing a reduction of thickness.
The company plans to continue promoting the application of the 980-MPa-class UHSS through its Early Vendor Involvement activities with automobile manufacturers.
