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FireCarb is a high quality expandable graphite product. Expandable graphite belongs to a group of products called intumescent; their main property is the ability to expand when heated.

Your contact for 

Magnus Johansson

Sales Manager
FireCarb - expandable graphite

FireCarb is based on a high quality Chinese crystalline flake graphite, it's structure is in the form of layered sheets of carbon atoms. In a process known as intercalation, an acid solution is placed between the carbon layers. Following manufacture, the material is thoroughly washed and dried trapping the solutions within the platelets. The end result is a dry, pourable, clean material with minimal surface acidity.

Expandable graphite

Expandable graphite belongs to a group of products called 'intumescents'; the main property of which is the ability to expand when heated. On exposure to heat the retained solutions within FireCarb produce a gas that expands and forces open the graphite platelets.

The tremendous expansion that expandable graphite offers (up to 350 x volume at 1000°C) makes it more effective than conventional intumescents. This expansion has the added benefit of creating high pressure, especially when mechanically restricted. At the same time an insulating carbonaceous char is formed which protects the substructure from the heat source.

Typically expansion starts at 170°C, and standard FireCarb grades demonstrate both a good onset of expansion at relatively low temperature and a high total volume of expansion.

FireCarb applications

  • FireCarb in passive fire protection

    FireCarb is primarily used as the active agent in intumescent passive fire protection products, where its significant expansion on heat exposure and pressure generation are ideally suited. Typical applications include door seals, pipe collars and wraps, fire pillows, intumescent liners for electrical fixing boxes and downlighters, and air transfer grilles and dampers. Modern construction methods increasingly rely on these products to compartmentalise buildings in the outbreak of a fire to contain the fire and restrict the spread of smoke and flames.

  • FireCarb in intumescent coatings

    Intumescent coatings for structural steelwork help prolong the integrity of the building in fire situations; the FireCarb forms a protective char slowing the transmission of heat to the load bearing steel which would otherwise rapidly lose its strength.

  • FireCarb for bituminous roofing systems

    When plastic and bituminous roofing is exposed to intense heat it will soften and melt resulting in dripping of the material. The addition of FireCarb greatly reduces this hazard as the char formed by the expanded graphite inhibits further combustion and helps to bind the molten polymer.

  • FireCarb in furniture foam

    The action of FireCarb in seating foam is similar, with the graphite reacting to applied flame by forming a non-combustible ash and protecting the underlying foam from further combustion.

  • Fire exit - FireCarb, expandable graphite

    Other uses for FireCarb

    FireCarb finds application as a heat-activated low-density insulating material in the temperature control of molten metals. In the steelmaking process, FireCarb acts as an exfoliating medium in insulating compounds for the ladle and tundish.

FireCarb standard grades

Please find our FireCarb product range including the typical properties per grade below:

Grades Expansion ml [°C] Particle size 80% > [µm]
TEG-500 300 300
TEG-370 275 300
TEG-345 250 300
TEG-315 220 300
TEG-160  85  300

Customised products are available upon request - these include delayed expansion (DE); high initial expansion (A); and modified pH (H) grades.

FireCarb packaging

Our FireCarb product range is available in paper sacks or big bags. Due to the products conditions no bulk solution is available.

The typical properties of Chalk are:

Physical properties of FireCarb

Expansion onset temperature (°C) 170
Carbon content (wt.%) 90 min.
pH value 4 - 7
Volatiles (%) < 12
Loose bulk density (kg/l) 0.45-0.50

Expandable graphite origin

LKAB Minerals use high quality Chinese expandable graphite for its FireCarb products.

Expandable graphite toxicology

A non-toxic, non-hazardous stable mineral. You can download the Safety Data Sheet in the section on the right hand side for further information.


Interested in what FireCarb can do for you?

Start by selecting your country to get the right contact person

My name is Magnus Johansson and I'm a FireCarb product expert located in United States.

If you are interested in what this product can do for you, please give me a call or send me a message.

Office .
Mobile +1 513 375 2599

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08:00 AM - 17:00 PM

Local time in United States is 22:12 PM (UTC -5)

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