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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
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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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