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Electron Microscopy Sciences

Silicone Nitride Mesh and Films

arrow13Pyrolytic Graphite

arrow12Pyroid® Pyrolytic Graphite Product Line

Vitreous Carbon Substrate

Our Pyroid® pyrolytic graphite is a very light weight, 5'9's pure, solid crystal composition, with no granular components, extremely smooth surface, capable of withstanding cryogenic temperatures as well as temperatures in excess of 3,000°C

The material is extremely anisotropic, meaning it conducts heat and electricity in the a-b plane like copper but acts like a ceramic in the normal direction. In an annealed state, the thermal and conduction properties increase up to four to eight times that of aluminum and copper respectively.

The material has zero porosity making it extremely stable and exhibits no outgassing. It is ideal for use in corrosive environments including acids and chlorine, and is highly transparent to organic samples and electrons, for analytical work, such as x-ray investigation, metallurgical, crystal growth, medical imaging technology etc.

Physical Properties of Pyroid® Pyrolytic Graphite

Property Direction* Metric Units English Units
Density ----- 2.22 g/cc 1.37 lb/ft3
Flexual Strength      
Room Temperature a 840 kg/cm2 12,000 psi
2750°C a 3,500 kg/cm2 50,000 psi
Compressive Strength      
Room Temperature a 1,050 kg/cm2 15,00 psi
  c 1,750 kg/cm2 25,000 psi
Shear Strength      
Room Temperature a 70 kg/cm2 1,000psi
>Coefficient Thermal Expansion      
Room Temperature a .60 x 10-6 cm/cm°C 1.0 x 10-6 in/in°F
2200°C a .68 x 10-6 cm/cm°C 1.2 x 10-6 in/in°F
Room Temperature c 6.8 x 10-6 cm/cm°C 12.0 x 10-6 in/in°F
2200°C c 8.0 x 10-6 cm/cm°C 14.7 x 10-6 in/in°F
Thermal Conductivity      
Room Temperature a 345 W/m°K 200 BTU/(hr ft2)(°F/ft)
1650°C a 114 W/m°K 66 BTU/(hr ft2)(°F/ft)
Room Temperature c 1.73 W/m°K 1.00 BTU/(hr ft2)(°F/ft)
3000°F c 1.30 W/m°K 0.75 BTU/(hr ft2)(°F/ft)
Electric Resistivity      
Room Temperature a 500 µΩcm  
1650°C a 200 µΩcm  
Room Temperature c 0.6 Ωcm  
1650°C c 0.22 Ωcm  
Scleroscope Hardness a 103 103
  c 68 68
Oxidation Threshold   650°C 1200°F
Permeability   Helium Leak Tight
at 10 – 6 mmHg

Pyrolytic Graphite Stripper Filmarrow12Pyrolytic Graphite Stripper Film

Smooth pyrolytic graphite stripper film is used in radiation sources, nuclear particle high energy density research, and medical diagnostic imaging instruments Pyrolytic graphite film offers major customer benefits relative to alternative materials such as amorphous carbon film or polycrystalline graphite films.

Pyrolytic graphite film is:

  • Stable at high temperature and vacuum
  • Easy to flex due to inherent higher flexural modulus
  • Erodes very slowly

Resulting in:

  • Higher strength than alternative materials
  • Last 5 times longer than alternative materials

Pyroid® Pyrolytic Film Thickness/Real Size Conversion

Thickness, in. Wt/sq in. Thickness, µm Wt/sq cm
0.0002 0.0065 g 5 1.0 mg
0.0004 0.0129 g 10 2.0 mg


EMS # Film Size, in. (mm) Thickness, µm Pack Price  
76040-05 0.75 x 0.75 (19 x 19) 5 each 750.00 Add to Cart
76040-10 0.75 x 0.75 (19 x 19) 10 each 795.00 Add to Cart
76041-05 1.0 x 1.0 (25.4 x 25.4) 5 each 995.00 Add to Cart
76041-10 1.0 x 1.0 (25.4 x 25.4) 10 each 850.00 Add to Cart

We can custom make foils up to 1.5 inch wide and 3 inches long from 5µm and up thicknesses.

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