Glassy carbon, also called vitreous carbon, is an advanced material of pure carbon combining glassy and ceramic properties with these of graphite. Unlike graphite, glassy carbon has a fullerene-related microstructure. This leads to a great variety of unique material properties.

Glassy carbon SIGRADUR® is characterized by the following properties:

·        High temperature resistance in inert gas or vacuum up to 3000°C

·        High purity

·        Extreme corrosion resistance

·        Impermeability to gas and liquids, no open porosity

·        No wetting by melts

·        High hardness and strength

·        Low density

·        High surface quality, no particle generation

·        Low thermal expansion

·        Extreme resistance to thermal shock

·        Isotropy of physical and chemical properties

·        Good electrical conductivity

·        Biocompatibility

Powders made of glassy carbon SIGRADUR® K and SIGRADUR® G are available in splintered and spherical particles in the following particle sizes:

• 0,4 – 12µm
• 10 – 20µm
• 20 – 50µm
• 40 – 80µm
• 80 – 200µm
• 200 – 400µm
• 400 – 630µm
• 630 – 1000µm
• 1000 – 2000µm (only splintered)
• 2000 – 3150µm (only splintered)
• 3150 – 4000µm (only splintered)

Fine-grained powder made of glassy carbon SIGRADUR®.

Spherical powder made of glassy carbon SIGRADUR®.

Splintered powder made of glassy carbon SIGRADUR®.