Graphite - Keratherm

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 discontinued

• Properties

• Property	Symbol	Unit	90/10	90/15 90/10 w/filled adhesive	90/20 90/10 w/standard adhesive	90/25 discontinued
  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	? (z/x-y)	W/mK	5.5 / 55	6.0	4.0	7.0 / 150
  Electrical Properties
  Electrical Resistance	z(x/y)	Oµm	6 – 8 (650 – 700)	–	–	6 – 8 (650 – 700)
  Breakdown Voltage	Ud;ac	kV	conductive	–	–	conductive
  Volume Resistivity		Ocm	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	?	g/cm³	> 1.0	–	–	> 1.2
  Flame Class		UL	94V-0	–	–	94V-0
  Adhesive Coating			–	filled adhesive	yes	–
  Shelf Life		months	–	12	12	–