Graphite Material

  • Graphite has unique chemical and physical features.

  • Raw graphite is porous and it is resistant to many aggressive chemicals in a wide temperature range.

  • It is used up tp 1800℃ in process industry.

  • Impregnated graphite Graphec is fully impervious and inert to a wide range of aggressive chemicals up to 220℃.

  • Thermal conductivity (up to 160 W / mK) is significantly higher than any other industrial material.

Comparison of thermal conductivity (W/m.˚C)

Impregnated Graphite

Application Carbon steel pickling liquor heating/cooling Stainless steel pickling liquor heating/cooling
Graphite grain size (mm) 0.8 – 0.5 0.043 – 0.008 0.043 – 0.008
Impregnant type Phenolic Pure PTFE
Density 1.82 1.89 1.92
Flexural strength (MPa – ASTM C651) 27 43.0 – 50.0 32.0 – 42.0
Compression strength (MPa – ASTM C695) 65 118.0 – 159.0 91.0 – 130.0
Young modulus (GPa – ASTM C559) 9 11 11
Max permissible material temperature (˚C) 200 250 250
Recommended for Moderate pressure / temperature / corrosion. Cooler. Carbon steel pickling liquor. Higher pressure / temperature. Frequent thermal cycling. Higher corrosion resistance. Steam heater. Frequent thermal cycling.

Main Advantages are

  • SHOCK PROTECT®  design of block against water and steam hammering.

  • STABLE LOAD® design of compression spring against stress fatigue. Reduce cycling mechanical fatigue up to 95% competitors.

  • STRESS FREE® which avoid piping stress on graphite components.

  • Optimized thermal sizing with high compacity.

  • GT-FLON® sole manufacturer of “real” PTEE graphite impregnation in Asia (unlike “coating”)

  • Fast delivery of spare parts of all design.

  • Gasket without steam heating seating process.

  • Fine and TOYO’s ultrafine grain graphite to reduce thermal shock sensitivity.


Main Markets

  • Pharmacy

  • Fine chemical

  • Agro chemical (pesticide, herbicide, fertilizer)

  • Steel industries (pickling and acid regeneration plant)

  • Hydrometallurgy

  • Petro chemical (plastics)

Main Applications

  • Heating, cooling, evaporation, condensation of corrosive medium

  • Waste acid, waste water and gas treatment (scrubber, falling film absorber, boiler)

  • Concentration, crystallization by evaporation with hydrochloric acid, sulfuric acid or phosphoric acid

  • Separation and purification of corrosive chemical products

  • Acid dilution units

  • Vacuum steam jet technology

  • Chemical reactions

Typical Severe Application Example

MEDIA Conc. up to(%) Temp up to(˚C)
HF hydrofluoric acid 60% 200˚C
HNO3 nitric acid 40% 150˚C
H2SO4 sulfuric acid 95% 180˚C
HBr hydrobromic acid 100% 200˚C
HCl hydrochloric acid 100% 200˚C
H3PO4 phosphoric acid 100% 200˚C
NH4Cl ammonium chloride 100% 200˚C
CaCl2 calcium chloride 100% 200˚C
cupric chloride & sulfate 100% 200˚C
FeCl3 ferric chloride 100% 200˚C
caustic potash & soda 100% 200˚C