Flexible Graphite Carbon Foil

Flexible Graphite Carbon Foil is a robust, compressible, and thermally conductive sheet made from compressed exfoliated graphite. Unlike films derived from nanosheets, this material is formed via high-temperature expansion and mechanical rolling, giving it a layered, planar morphology with excellent mechanical flexibility. It offers high in-plane thermal conductivity, low permeability to gases, and outstanding chemical resistance, making it indispensable in thermal interface materials, EMI shielding gaskets, and high-vacuum seals. Key applications include battery heat spreaders, graphite-based gasketing for nuclear and aerospace systems, and electrode supports in electrochemical cells. Its performance in thermal dissipation and electromagnetic attenuation makes it ideal for high-reliability electronics and precision optics. The material’s resilience under compression, low outgassing rate, and compatibility with harsh environments have driven its adoption in space instrumentation and cleanroom sealing. Ongoing research explores hybridization for improved thermal cycling resistance and multifunctional structural uses.

Grade: Flexible Graphite
Formula: C
Percentage Purity: 99.8%
Thickness: 1mm
Length 1: 200mm
Length 2: 200mm
CAS Number: 7440-44-0
UOM Code: 733-877-89
Legacy Code: C 000330
Distributor Code: GF73387789

SKU: 1000036977

Product Code: C-00-FL-000130

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Tolerances

Foil/Film/Sheet

Thickness	<0.01mm	±25%
Thickness	0.01mm - 0.05mm	±15%
Thickness	>0.05mm	±10%

Tolerances

Foil/Film/Sheet

Thickness	<0.01mm	±25%
Thickness	0.01mm - 0.05mm	±15%
Thickness	>0.05mm	±10%

Technical Data Sheet

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Safety Data Sheet

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Material Properties for Metals

Atomic Properties

Element	Value
Atomic number	6
Crystal structure	Hexagonal/Diamond
Electronic structure	He 2s² 2p²
Valences shown	2, 3, 4
Atomic weight( amu )	12.011
Thermal neutron absorption cross-section( Barns )	0.0034
Photo-electric work function( eV )	4.8
Natural isotope distribution( Mass No./% )	12/ 98.89
Natural isotope distribution( Mass No./% )	13/ 1.11
Atomic radius - Goldschmidt( nm )	0.077
Ionisation potential( No./eV )	6/ 490
Ionisation potential( No./eV )	4/ 64.5
Ionisation potential( No./eV )	1/ 11.26
Ionisation potential( No./eV )	3/ 47.9
Ionisation potential( No./eV )	2/ 24.38
Ionisation potential( No./eV )	5/ 392

Mechanical Properties

Element	Value
Hardness - Mohs	0.5-1
Hardness - Mohs	10
Material condition	Diamond
Material condition	Graphite
Bulk modulus( GPa )	33
Bulk modulus( GPa )	542
Tensile modulus( GPa )	4.8

Electrical Properties

Element	Value
Electrical resistivity( µOhmcm )	1375@0@0°C
Thermal emf against Pt (cold 0C - hot 100C)( mV )	0.7

Physical Properties

Element	Value
Boiling point( C )	5000
Density( gcm⁻³ )	2.25@20°C

Thermal Properties

Element	Value
Melting point( C )	3650
Specific heat( J K⁻¹ kg⁻¹ )	712@25°C
Thermal conductivity( W m⁻¹ K⁻¹ )	80-240@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	0.6-4.3@0-100°C