Nippon Steel’s High Tensile Plate SBHS Used for Big Bridge in Tokyo

Nippon Steel announced on Tuesday the firm’s high tensile steel sheet for bridge, called “SBHS (Steels for Bridge High Performance Structure),” was adopted to Nagata Bridge in Tokyo. This is the first order receipt after SBHS’s recognition as Japan Industrial Standards (JIS) products. Nippon Steel will supply SBHS for Nagata Bridge at approximately 600 tonnes. SBHS reduces bridge weight by 30% and contributes to lower construction cost.

Nagata Bridge is 250 meters long. Tokyo local government required super thick steel plate which can be cold rolled and welded on the construction site to realize the bridge’s pipe truss structure for saving weight.

SBHS is maximum 67 millimeters thick and represents 500N/mm2 tension and 4-time high toughness compared with general plates. SBHS shows high welding and cold processing properties thanks to Nippon Steel’s thermo mechanical cold process without adding ferroalloy additives.

SBHS was recognized by Japan Standards Association as JIS G3140 on November 20, 2008, which was the first recognition as steel plate for bridges in 40 years. Previous steel plate for bridge, “BHS,” had been adopted to two big bridges in Tokyo at about 17,000 tonnes as products by Japan Iron & Steel Federation.