Więźniów Oświęcimia 38, 43-330 Wilamowice
+48 33 817 59 36, +48 817 59 37
certech@certech.pl

Carbon-graphite plastics – Materials

Natryskiwanie cieplne, ceramika techniczna, naddźwiękowy natrysk HVOF.

Output carbon materials have porous structure – pores cover 10%–30% of volume. They are filled with impregnants, such as:
– synthetic resins
– metals- e.g., antimony

Beside a structure sealing function, impregnants improve strength properties, abrasion resistance. Simultaneously, impregnants determine application temperature, therefore, non-impregnated plastics of increased graphite content are used for work in high temperatures.

Due to physical properties of carbon-graphite plastics, one can distinguish:
– hard carbon-graphite materials
– electrographites

PHYSICAL PROPERTIES OF CARBON-GRAPHITE PLASTICS USED BY “CERTECH”

PropertiesCarbon-graphite plastics
Impregnated with resinImpregnated with antimonyWithout impregnation
Density [g/cm3]1.822.251.68
Hardness110 HRB115 HRB95 HRB
Bending strength [Mpa]759535
Compressive strength [Mpa]200260100
Young’s modulus E
[GPa]
27309
Coefficient of thermal linear expansion α 
[10-6/K]
5.04.03.7
Thermal conductivity coeff. λ [W/mK]142025
Thermal shock resistance [°C]200250250
Temperature resistance in oxidizing atmosphere [°C]200400500
Temperature resistance in reducing atmosphere [°C]2005502500