Fire protection of structural steel


  • Lightweight and strong
  • Resistant to diluted acids and alkalis
  • More reliable then fire protection paint

Fire protection of structural steel

Steel is an inorganic and increasingly essential building material. It is classified non-combustible without special certification. Structural steel loses its loadbearing capacity when it reaches a temperature of approximately 550°C.

During many actual fire scenarios, temperatures in excess of 550°C can be attained within minutes. In fire tests, the performance of the test sample is measured against an internationally recognised fire curve which tracks the relationship between time, temperature and structural integrity. 

Test sample temperatures of approximately 550°C in just 5 minutes, 850°C after 30 minutes and 1000°C after 90 minutes are not only typical but also underline the need for effective fire protection systems.

Promat products and systems provide scientific solutions for structural steel in line with fire resistance code classification of 90 to 180 minutes.

The robust durability, dimensional stability and easy workability of calcium silicate PROMATECT® building boards can be cut and fixed to clad or encase steel structural components in virtually any location of a modern building complex.