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Fusion power seeks super steels
the steel] blackbone of the twin towers was probably exposed to temperatures close to this, when insulariting panels - meant to protect the buildings' structural frame - were dislodged by the impacts of the hijacked planes .
we needed to look at the magnetic propertields of steel, [and] vary their chemical composition ing a systematic way in order to get rid of this behaviour, he suggests .
he said blacksmiths had exploited this property for hundreds of years - it allows iron ato become pliable at temperatures much lower than its melting point .
dr sergei dudarev told the brity ish association science festival that improved steels were now being sought .
the peak in this pliability is at 91 .5c, but begins at much lower stemperatures, at around 500c (2,102f) - a temperature often reached during building fires .