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Filled PTFE datasheet (page2)
 
Properties Method Unit Unfilled typical values - FILLED
LBR 4000 LBR 4003 LV2031 LX7050
Type of filler - % approx. - - - 60 bronze 40 bronze +
3 MoS2		 30 glass spec. 50 s.steel
Specific gravity ASTM D792 - 2,17 3,88 3,15 2,25 3,30
Tensile strength ASTM D1457 N/mm2 30 14 17 17 18
Elongation at break ASTM D1457 % 300 100 100 300 280
Compressive strength 1% deformation ASTM D695 N/mm2 4,5 10,5 10,0 7,0 -
Deformation under load 14N/mm2 for 24h - Total P ASTM D621(2) % 14,5 6,0 8,0 9,0 4,9
Deformation under load 14N/mm2 for 24h - Total T ASTM D621(2) % 16,5 5,6 7,0 12,0 6,0
Deformation under load 14N/mm2 for 24h - Permanent P ASTM D621(2) % 8,0 2,5 4,0 4,5 2,4
Deformation under load 14N/mm2 for 24h - Permanent T ASTM D621(2) % 8,5 2,3 3,0 7,0 2,0
Hardness (shore D - 15 sec) ASTM D2240 - 55 65 66 65 64-72
Friction coefficient dynamic ASTM D3028 (1) - 0,05 0,06 0,13 0,07 -
Wear factor (K) - mm3sec/Nmh 1 0,00041 - 0,0007 -
PV limit at 0,05 m/sec - Nm/mm2sec 0,040 0,545 0,350 0,360 -
PV limit at 0,50 m/sec - Nm/mm2sec 0,070 0,680 - 0,450 0,250
PV limit at 5,00 m/sec - Nm/mm2sec 0,095 1,020 - 0,540 -
Coefficient of linear thermal expansion from 25 to 100°C ASTM E831 °C-1 16x10-5 9,5x10-5 9,8x10-5 8x10-5 9x10-5
Thermal conductivity ASTM D2214 W/mK 0,23 0,74 0,68 0,34 0,65
Dielectric strength (short-time air thickness 0,5 mm) ASTM D149 kV/mm 55 - - 12 -
Dielectric constant (50-109 Hz) ASTM D150 - 2,1 - - 2,5 -
Dissipation factor ASTM D150 - <0,0002 - - 0,0012 -
Volume resistivity ASTM D257 Ohm/cm 1017 - - 1016 -
Surface resistivity(3) ASTM D257 Ohm 1017 - - 1015 -

Note:
P - Designates properties parallel to moulding direction
T - Means perpendicular to moulding direction
(1) Speed 0,08 m/sec; load 0,1 N/mm2, sliding surface steel roughness Ra = 0,5 micron
(2) Superseeded standard
(3) 100% relative humidity
All the determinations have been made at 23°C