Eliminating the fire-resistant coating of steel frame buildings would result in lower construction costs, a shorter construction period, more effective interior space utilization, better working environment, and more aesthetic building designs. As a replacemet for fire-resistant coatings, "comprehensive fire-resistant design system for building fire safety" was developed as part of a comprehensive technology development project of the Ministry of Construction. Fire-resistant (FR) steels and stainless steels were developed that feature elevated-temperature properties (fire resistance) superior to those of conventional steels. These developments have made it possible to eliminate fire-resistant coatings in some building applications. The fire-resistant steels and stainless steels for building structural use are described, and examples of fire-resistant building structures constructed from these materials are introduced.
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