Filled PTFE datasheet (page2) [ Datasheet page 1 ] Property Method Unit unfilled 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 molding direction
T - Means perpendicular to molding direction
(1) Speed 0,08 m/sec; load 0,1 N/mm2, sliding surface steel roughness Ra = 0,5 micron (micrometer)
(2) Superceded standard
(3) 100% relative humidity
All the determinations have been made at 23°C