Graphite foil is an excellent sealing material for high temperature, high-pressure transfer of
liquids, gases, steam, chemicals and corrosives. It is manufactured from high purity, high
crystalline natural graphite flakes, which are processed into continuous foil by a special acid
and thermal treatment to produce expanded graphite crystals. The expanded graphite
crystals are then formed into foil through an extensive calendaring process without
any resins and binders.


Advantages of HPMS Graphite Foil

- Excellent thermal stability and reflectivity.
- Resistant to low temperature of -200
°C.
- Resistant to high temperature of 450
°C in air, 700 °C in steam and 3000 °C in inert or  
reducing environment.
- Chemically inert: Resistant to fluids with pH range of 0-14 (except strong
oxidizers such as nitric or sulphuric acid).
- High purity: eliminates potential fluid contamination, ideal material for nuclear applications
- Low coefficient of friction: It is self-lubricating.
- Asbestos free: no associated health hazards.
- Low electrical resistivity.
- High thermal conductivity.
- Highly anisotropic:  the electrical and thermal conductivity characteristics are very
different in the direction parallel to and perpendicular to flakes.    
- Excellent in-process longevity: save replacement and down time costs.

Applications

- Gaskets material in automotive, petroleum and chemical, paper, and nuclear industries.
- Thermal barrier at high temperature to provide outstanding reflectivity.
- Fuel cell industry for bipolar plates.
- Excellent for sealing high temperature valves, shafts and flanges.
- Excellent linings and protective layer for vessels containing hot or corrosive fluids.

Typical Properties of HPMS Graphite Foil
ITEM
UNIT
VALUE
Thickness (Roll)
inch
0.006 - 0.06
Thickness (Sheet)
inch
0.06 - 0.24
Width
inch
4 - 60
Length
feet
100 - 1000
For reinforced graphite foil sheets, click here.
Why buy graphite foil from us?

(1) Excellent Quality: Quality control starts with strict standards for the selection of the flake
graphite, which is a critical element for the quality of the final product, and continues through
the acid and the thermal treatment, to testing the final product. The extensive testing
throughout the process ensures all key stages of the production are kept within specific
tolerance limits. The result is high quality graphite foil with high tensile strength, high purity
and excellent compressibility. The whole manufacturing process is ISO 9001 certified.

(2)
Wide Selection Ranges: We offer a full line of graphite foil: homogeneous rolls and sheets
(width from 2" to 60"), as well as reinforced sheets with stainless steel or perforated stainless
steel sheet inserted. Non standard sizes and grades are also available on request.

(3)
Competitive Prices: Do you have the required competitive edge? Please Contact Us and
request a quote for your product needs so we can demonstrate that the savings HPMS offers
make a significant difference on your bottom-line.

(4)
Superior Customer Service: We are committed to your complete satisfaction and we
strive to provide you with the best service in the industry. With HPMS, you can expect
prompt  responses, personal attention and on time delivery.

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PROPERTY
UNIT
Grade AA
Grade A
Grade B
Grade C
Carbon
(minimum)
%
99.5
99
99
98
Ash
(maximum)
%
0.5
1.0
1.0
2.0
Density
g/cc
0.7 - 1.5
0.7 - 1.5
0.7 - 1.5
0.7 – 1.5
Tensile Strength
MPa
5.2
4.5
4.5
4.0
Chloride
ppm
≤35
≤40
≤45
≤50
Sulphur
ppm
≤500
≤1000
≤1200
≤1500
Compressibility
%
>40
>40
>40
>40
Recovery
%
>15
>15
>15
>15
Compatible pH Range
pH
0 - 14
0 - 14
0 - 14
0 - 14
Application
Temperature
(Minimum)
Deg. C  /
( Deg. F )
-200/
(-328)
-200/
(-328)
-200/
(-328)
-200 /
( -328 )
Application
Temperature
(Maximum)
         
In Air
Deg. C  /
( Deg. F )
450/
(842)
450/
(842)
450/
(842)
450 /
( 842 )
In Steam
Deg. C  /
( Deg. F )
700/
(1292)
700/
(1292)
700/
(1292)
700/
( 1292 )
In reducing
environment
Deg. C  /
( Deg. F )
3000/
3000/
(5432)
3000/
(5432)
3000 /
( 5432 )

Flexible Graphite Foil

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HP Materials Solutions, Inc.
5850 Canoga Ave, #400, Woodland Hills,  CA 91367, USA    
Tel: 1-888-375-1803  |  Fax: 818-626-8433  |  E-mail: support@hpmsgraphite.com