STEELFLEX® are flexible, thin and lightweight microporous insulation panels, designed for the iron and steel industry and other hot metal applications. These panels have exceptional thermal and mechanical properties and are available in three different temperature grades; 1000, 1100 and 1200 °C.

STEELFLEX® panels are made of an opacified blend of filament reinforced pyrogenic silica or alumina for the 1200 grade and can be delivered with various water-repellent coverings. An additional reinforcing layer of mica can be optionally applied to one side to increase the strength of the panel and enhance its handling and durability.

Further Information


  • Transfer ladles;
  • Torpedo cars;
  • Tundishes;
  • Electric Arc Furnaces;
  • Degassers


  • Excellent thermal performance;
  • Available in various temperature grades;
  • High compressive strength;
  • Available with water-repellent coatings;
  • Non-combustible

Please note
All physical and mechanical values are averages based on standard production and tested according to internal procedures. The typical values are given for guidance. The figures can change dependent on the test methods used. If a particular value is of prime importance for a specification, please consult Promat Technical Department.