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Sumitomo Metals Receives Order for H-SA700 Ultrahigh Tensile Strength Steel
07/13/2011 - Sumitomo Metal Industries, Ltd. has received the first order for its ultrahigh tensile strength steel, H-SA700, from Obayashi Corp. for construction of a “Techno Station” main building at its Technical Research Institute. Sumitomo Metals also independently developed a process innovation for this material: the preheating for welding can be omitted.
Sumitomo Metal Industries, Ltd. has received the first order for its ultrahigh tensile strength steel, H-SA700, from Obayashi Corp. for construction of a “Techno Station” main building at its Technical Research Institute. Sumitomo Metals also has independently developed a process innovation for this material: the preheating for the welding work can be omitted.
H-SA700, with yield strength said to be about twice as high as conventional steel, was developed to improve the seismic performance of buildings in the project concerning “research and development of buildings with new structural systems that use innovative structural materials.” This is a collaborative government project participated in by five government ministries, including the Ministry of Economy, Trade and Industry and the Ministry of Land, Infrastructure and Transport, as well as the Japan Iron and Steel Foundation and Japan Society of Steel Construction. The project was conducted in 2004 to 2008.
A steel stand column made of H-SA700, when filled with ultrahigh strength concrete developed by Obayashi, becomes an ultrahigh strength CFT column.
A steel stand column made of H-SA700, when filled with ultrahigh strength concrete developed by Obayashi, becomes an ultrahigh strength CFT column.
Sumitomo Metals has developed and received the approval of the Minister of Land, Infrastructure and Transport for ultrahigh strength steel building materials including H-SA700, which is manufactured with a reduced amount of alloying elements and by omission of heat treatment. As a member of the Japan Iron and Steel Foundation, Sumitomo Metals was involved in the development of H-SA700.
