Pure Expanded Graphite Sheet

Graphite foil is an excellent sealing material for high temperature, high-pressure transfer ofliquids, gases, steam, chemicals and corrosives. It is manufactured from high purity, highcrystalline natural graphite flakes, which are processed into continuous foil by a special acidand thermal treatment to produce expanded graphite crystals. The expanded graphitecrystals are then formed into foil through an extensive calendaring process withoutany 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 strongoxidizers 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 verydifferent 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 FoilITEMUNITVALUEThickness (Roll)inch0.006 - 0.06Thickness (Sheet)inch0.06 - 0.24Widthinch4 - 60Lengthfeet100 - 1000(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) 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.PROPERTYUNITGrade AAGrade AGrade BGrade CCarbon    (minimum)%99.5999998Ash    (maximum)%0.51.01.02.0Densityg/cc0.7 - 1.50.7 - 1.50.7 - 1.50.7 – 1.5Tensile StrengthMPa5.24.54.54.0Chlorideppm≤35≤40≤45≤50Sulphurppm≤500≤1000≤1200≤1500Compressibility%>40>40>40>40Recovery%>15>15>15>15Compatible pH RangepH0 - 140 - 140 - 140 - 14Application      Temperature      (Minimum)Deg. C  /      ( Deg. F )-200/      (-328)-200/      (-328)-200/      (-328)-200 /      ( -328 )Application      Temperature      (Maximum)In AirDeg. C  /      ( Deg. F )450/      (842)450/      (842)450/      (842)450 /      ( 842 )In SteamDeg. C  /      ( Deg. F )700/      (1292)700/      (1292)700/      (1292)700/      ( 1292 )In reducing    environmentDeg. C  /      ( Deg. F )3000/3000/      (5432)3000/      (5432)3000 /      ( 5432 )