Ultra-high tensile strength steel withstands large earthquakes

TOKYO —

Sumitomo Metals will deliver its first order for H-SA700, the innovative ultra-high tensile strength steel, to Obayashi for construction of a “Techno Station” main building at its Technical Research Institute. The new steel withstands even large earthquakes.

H-SA 700 is a ultra-high tensile strength steel material which has yield strength that is about twice as high as conventional steel. It was developed to improve the seismic performance of buildings in the project concerning “Research & development of buildings with new structural systems that use innovative structural materials.”

In addition, Sumitomo Metals has independently developed a process innovation for this material. Specifically, the preheating for the welding work can be omitted.

A steel stand column made of H-SA700, when filled with ultra-high strength concrete developed by Obayashi, becomes an ultra-high strength CFT column.

This column makes the building safe even against a major earthquake and allows the creation of a large space with a wide span between the columns, which is excellent in terms of design and amenity, as columns made of this material can be thinner and buildings require the installation of fewer columns.

Japan Corporate News Network

  • -1

    wanderlust

    The new steel withstands even large earthquakes.

    How large? And do they provide a written, life-long, money-back guarantee?

  • 1

    ihavegreatlegs

    Excellent. This is old news but now they are putting it out on the market. Go for it!

  • -1

    Munawir Ismail

    withstands large earthquakes - at what Richter Scale? 9.0 , 9.5 or 10.0.........

  • -2

    some14some

    It's weakness will be exposed by large earthquakes.

  • -1

    WordStar

    But will it withstand tsunami as well?

  • -2

    smithinjapan

    It sounds like it would work better against damage from an earthquake if it were the usual rolling type, but if it's an 'up-down' earthquake I can't see how it would make much of a difference.

  • -1

    tokyokawasaki

    It will cost more to produce so expect corners to be cut (apart from the marketing materials stating that building uses super steel.

  • 0

    Smorkian

    It sounds like it would work better against damage from an earthquake if it were the usual rolling type, but if it's an 'up-down' earthquake I can't see how it would make much of a difference.

    Why not??

  • 0

    VicMOsaka

    Any advance in metallurgy is a great thing. This steel will have many uses in industry and I am glad that a Japanese company has been able to improve steel technology.

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