Fire resistant high strength low alloy steels
- 1 December 1990
- journal article
- research article
- Published by SAGE Publications in Materials Science and Technology
- Vol. 6 (12) , 1210-1214
- https://doi.org/10.1179/026708390790189920
Abstract
In steel frame construction of multistorey buildings, the structural steel members are coated with an insulating material to give them protection in the event of afire. This requirement can double the cost per ton of steel used. The 0·2% proof stress of the standard 250 and 350 grades of steel used commonly in such buildings is reduced to half its room temperature value at about 570°C. Newly developed microalloyed high strength low alloy steels with an acicular ferrite/bainite microstructure are shown to retain half of their room temperature proof stress at about 670°C, thus reducing the insulating requirements. MST/1207Keywords
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