Polikim EFALON® K-25 PTFE, 25% Carbon Filled

Category	Polymer , Thermoplastic , Fluoropolymer , PTFE , Polytetrafluoroethylene (PTFE), Carbon Fiber Filled
Manufacturer	Polikim Polimer ve Kimya Sanay
Trade Name	EFALON®
Port	Ningbo port,China
Trade Terms	FOB, CFR, CIF
Payment Terms	L/C, T/T, Western Union
Download PDF	Polikim EFALON® K-25 PTFE, 25% Carbon Filled.pdf
Price	EMAIL US sales@lookpolymers.com

Material Notes:

K25 and K35 have less thermal expansion, higher wear resistance, less deformation under load properties compared to virgin Efalon® (PTFE). Applications: Bearings, piston rings, gaskets, seal rings.Information provided by Polikim Polimer.

Physical Properties	Metric	English	Comments
Density	2.05 - 2.15 g/cc	0.0741 - 0.0777 lb/in³	ASTM D792
Deformation	0.40 - 2.1 % @Temperature 23.0 °C, Time 86400 sec, Pressure 13.7 MPa	0.40 - 2.1 % @Temperature 73.4 °F, Time 24.0 hour, Pressure 1990 psi	permanent; ASTM D621
	1.8 - 2.0 % @Temperature 150 °C, Time 86400 sec, Pressure 0.981 MPa	1.8 - 2.0 % @Temperature 302 °F, Time 24.0 hour, Pressure 142 psi	total
	2.9 - 4.8 % @Temperature 23.0 °C, Time 86400 sec, Pressure 13.7 MPa	2.9 - 4.8 % @Temperature 73.4 °F, Time 24.0 hour, Pressure 1990 psi	total; ASTM D621
	8.0 - 9.0 % @Temperature 150 °C, Time 86400 sec, Pressure 4.90 MPa	8.0 - 9.0 % @Temperature 302 °F, Time 24.0 hour, Pressure 711 psi	total

Mechanical Properties	Metric	English	Comments
Hardness, Shore D	65 - 68	65 - 68	ASTM D2240
Tensile Strength, Ultimate	10.8 - 20.6 MPa	1560 - 2990 psi	ASTM D638
Elongation at Break	70 - 110 %	70 - 110 %	ASTM D638
Compressive Strength	8.34 - 10.8 MPa	1210 - 1560 psi	1% Deformation; ASTM D695
Izod Impact, Notched (ISO)	8.50 - 9.00 kJ/m²	4.04 - 4.28 ft-lb/in²	ASTM D256
Coefficient of Friction	0.12	0.12
Coefficient of Friction, Static	0.11	0.11
Limiting Pressure Velocity	0.00360 - 0.00376 MPa-m/sec	103 - 107 psi-ft/min	3 m/min
	0.00409 - 0.00654 MPa-m/sec	117 - 187 psi-ft/min	30 m/min
	0.00490 - 0.00736 MPa-m/sec	140 - 210 psi-ft/min	300 m/min

Thermal Properties	Metric	English	Comments
CTE, linear	95.0 - 100 µm/m-°C @Temperature 25.0 - 100 °C	52.8 - 55.6 µin/in-°F @Temperature 77.0 - 212 °F	ASTM D696
	110 - 120 µm/m-°C @Temperature 25.0 - 200 °C	61.1 - 66.7 µin/in-°F @Temperature 77.0 - 392 °F	ASTM D696
	130 - 150 µm/m-°C @Temperature 25.0 - 300 °C	72.2 - 83.3 µin/in-°F @Temperature 77.0 - 572 °F	ASTM D696
Thermal Conductivity	0.628 - 0.711 W/m-K	4.35 - 4.93 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air	270 °C	518 °F	continuous
Minimum Service Temperature, Air	-260 °C	-436 °F

Electrical Properties	Metric	English	Comments
Volume Resistivity	>= 1000 ohm-cm	>= 1000 ohm-cm	ASTM D257
Surface Resistance	>= 1.00e+7 ohm	>= 1.00e+7 ohm	50% rel. humidity; ASTM D257

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