TMCP giant H-shapes for building structural use are a new steelproduct devel- oped by Nippon Steel in 1994. Marketed with theabbreviation NSGH (New Struc- tural (Nippon Steel) Giang H-Shape),they feature excellent earthquake resistance and weldability, despitethe higher strength (325 N/mm~2 minimum yield strength), thanconventional ultr-thichk H-shapes. This paper reports on the materialproper- ties and performance of TMCP giant H-shapes which provideeconomic merits through steel weight reduction without reducting thedesign datum strength (F value) of the steel materials and welds instipulated in the Building Standards Act.
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