Products

Keratherm Graphite Film

Keratherm Graphite Films are based onto 100% graphite material. The films are available as uncoated versions or for specific applications, provided with hot-setting wax coatings, filled or standard adhesives.

Because of their high heat conductivity, these films are used, among others, in the CPU field.

Possible Thickness:
     90/10: 0.15mm - 0.30mm
     90/25: 0.125mm

See Also: Graphite S 900 high density graphite film

Properties

Keratherm Graphite Film
Property Symbol Unit 90/10 90/15
90/10 w/filled
adhesive		 90/20
90/10 w/standard adhesive		 90/25
Color     black - - black
Thermal Properties
Thermal Resistance Rth K/W 0.09 0.07 0.23 0.05
Thermal Impedance Rti °Cmm²/W
Kin²/W		 36
0.05		 29
0.04		 55
0.10		 21
0.03
Thermal Conductivity λ (z/x-y) W/mK 5.5 / 55 6.0 4.0 7.0 / 150
Electrical Properties
Electrical Resistance z(x/y) Ωµm 6 - 8
(650 - 700)		 - - 6 - 8
(650 - 700)
Breakdown Voltage Ud;ac kV conductive - - conductive
Volume Resistivity   Ωcm 0.07 - - 0.05
Mechanical Properties
Measured Thickness (±10%) mm 0.200 0.175 0.250 0.125
Hardness   Shore D 25 - 35 - - 25 - 35
Tensile Strength   N/mm² 5.5 - - 4.0
Elongation   % 10 - - 10
Physical Properties
Application Temperature   °C -40 to +500 - - -40 to +500
Density ρ g/cm³ > 1.0 - - > 1.2
Flame Class   UL 94V-0 - - 94V-0
Adhesive Coating     - filled adhesive yes -
Shelf Life   months - 12 12 -