Fire Testing of Intumescent Coatings furnace

According to DIN EN 1993-1-2


Fire testing of intumescent coatings involves evaluating the performance of these coatings under high-temperature conditions to ensure they provide adequate fire protection. Intumescent coatings are specialized paints that swell when exposed to heat, forming an insulating char layer that protects the underlying substrate, typically steel, from high temperatures. Here’s a detailed overview of the fire testing process for intumescent coatings using a furnace:

Purpose of Fire Testing

The primary goal of fire testing is to assess the ability of intumescent coatings to protect structural elements during a fire. The coatings must delay the temperature rise of the substrate, maintaining its structural integrity for a specified period.

Test Standards and Protocols

Fire testing of intumescent coatings is conducted according to international standards such as:

  • ASTM E119: Standard Test Methods for Fire Tests of Building Construction and Materials.
  • UL 263: Standard for Fire Tests of Building Construction and Materials.
  • ISO 834: Fire-resistance tests — Elements of building construction.
  • EN 13381: Test methods for determining the contribution to the fire resistance of structural members.


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