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Graphite foil is produced to give a thin flexible foil with no binder or fibre reinforcement.

Natural Graphite, the raw material is a mineral that is mined in a similar way to coal. It is then chemically treated and processed to form a soft flexible foil. No binder is used in the manufacturing process and so the material has many of the properties of solid graphite and can be used on a wide variety of applications from cryogenics at minus 200ºC to elevated temperatures of 3000ºC. The material also has excellent chemical resistance and is suitable for use with most organic and inorganic chemicals with the exception of strong oxidising compounds such as nitric or sulphuric acid.

The foil is a non fibrous material and has none of the health or handling problems associated with asbestos.

It is available in a range of thicknesses from 0.2mm and in densities of 0.7 gm/cc and 1 gm/cc and can be supplied in sheet or roll form. The standard grade is 99% minimum purity.
Typical properties of graphite foil
Temperature in inert / reducing conditions -200 to +2800oC
Temperature in oxidising conditions -200 to +500oC
Tensile strength 5.2 Mpa
Leachable Chloride 50 ppm Maximum
Leachable Flouride 50 ppm maximum
Electrical resistance 900 x 10-6 ohm cm parallel to the surface

250,000 x 10-6 ohm cm perpendicular to the surface
Thermal conductivity 120 kcal/m.Hr ºC parallel to the surface

4 kcal/m.Hr ºC perpendicular to the surface
Coefficient of thermal expansion 2x 10-6/ ºC parallel to the surface

5x 10-6/ ºC perpendicular to the surface
Compressibillity 47%
Recovery 15%
Graphite Foil Availabiility
Product Code
Thickness / mm
Density /g/cc
Widths /mm
Length /M
Weight /Kg
LM021 0.2 1.0 1000 100 20.0
LM03507 0.35 0.7 1000 100 24.5
LM0350713 0.35 0.7 1300 100 31.85
LM0351 0.35 1.0 1000 100 35.0
LM0507 0.5 0.7 1000 70 24.5
LM050713 0.5 0.7 1300 70 31.85
LM051 0.5 1.0 1000 70 35.0
LM07507 0.75 0.7 1000 50 26.25
LM0750713 0.75 0.7 1300 50 34.13
LM0751 0.75 1.0 1000 50 37.5
LM107 1.0 0.7 1000 40 28.0
LM10713 1.0 0.7 1300 40 36.4
LM11 1.0 1.0 1000 30 30.0
LM1507 1.5 0.7 1000 25 26.25
LM150713 1.5 0.7 1300 25 34.13
LM151 1.5 1.0 1000 1.0 1.5
LM21 2.0 1.0 1000 1.0 2.0
LM2115 2.0 1.0 1500 1.0
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