Placi din grafit

Graphite sheets

Expanded graphite is used in high temperatures and has a very good level of chemical resistance. It is a soft material that has a better compression rate than gaskets made out of fiber mixtures, thus assuring a higher level of tightness.

Some of the extraordinary properties of the expanded graphite in sealing processes:

  • The lack of any volatile constituents, thus guaranteeing the same initial volume and physical-mechanical properties of the sealing elements
  • Resistance to cryogenic temperatures of up to 5500C in the air and 30000C in inert atmosphere
  • Fire protection
  • A high degree of conductibility, with very good effects on heat dissipation in dynamic sealings
  • Exceptional resistance to most aggressive corrosive environments (pH 0-14)
  • Elastic recovery up to 10% of initial thickness
  • Inert from the chemical point of view
  • No risk associated with food
  • Completely harmless to people’s health

Graphite sheets are manufactured in various ways, with or without insertion:

Types of insertions:

  • SR = without insertion
  • RI = insertion with plane stainless steel 316L(50μ)
  • RN = double insertion of nickel (13μ)
  • PI = insertion with perforated stainless steel 316L(100μ)
  • GI = insertion with stainless steel net 316L

Standard available thickness: 0.2 mm; 0.5 mm; 0.8 mm, 1 mm; 1.5 mm; 2 mm; 3 mm; 5 mm. Upon request, we can manufacture products with non-standard thickness.

Maximum width: 1000 mm

 

Main types N998 I980
Application Very pure product for special applications Standard industrial quality
Carbon content (%) >99.8 >98
Ash content <0.2 <2
Inhibitive content (%) 0 0
PPM Chloride content <=30 <=50
Resistance to temperature in oxidizing environment 500°C 450°C
Tensile strength  (DIN 50210 in MPa) 4.5 ± 1.5
Compressibility (%) (ASTM F36-66 Method A) 45 to 53
Elastic recovery (%) (ASTM F36-66) 10 to 15