Fluorseals PTFE Unfilled

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Fluorseals PTFE Unfilled
Categories:	Polymer; Thermoplastic; Fluoropolymer; Polytetrafluoroethylene (PTFE); Polytetrafluoroethylene (PTFE), Molded
Material Notes:	Information provided by TEKU GmbH Fluorkunststoffe, a distributor of Fluorseals materials.
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Physical Properties	Original Value	Comments

Density	2.15 - 2.18 g/cc	DIN 53479
Deformation	14 %	14 MPa, 100 h, 23°C; ASTM D621-59

Mechanical Properties	Original Value	Comments
Hardness, Shore D	55 - 59	DIN 53505
Ball Indentation Hardness	27.0 - 32.0 MPa	DIN 53456
Tensile Strength at Break	20.0 - 40.0 MPa	ASTM 1457-69 T
Elongation at Break	250 - 500 %	ASTM 1457-69 T
Tensile Modulus	0.750 GPa	DIN 53457
Flexural Strength	14.0 MPa	3.5% Flexural Stress; DIN 53452
Compressive Yield Strength	10.0 MPa	1% Yield Point; DIN 53454
	18.0 MPa	10% Yield Point; DIN 53454
Izod Impact, Notched (ISO)	16.0 kJ/m²	DIN EN ISO 197 397
Izod Impact, Unnotched (ISO)	NB	DIN EN ISO 197 397
Coefficient of Friction, Dynamic	0.23 - 0.27	v = 1 m/s
	0.25 - 0.28	v = 1.9 m/s
Abrasion	4.0	mm of depth after 5 hrs load duration; Partner Material ST 50
Torsional Stiffness	160 MPa	DIN 53447

Electrical Properties	Original Value	Comments
Volume Resistivity	1.00e+18 ohm-cm	DIN 53482
Surface Resistance	1.00e+17 ohm	DIN 53482
Dielectric Constant	2.1 @Frequency 50.0 - 100 Hz	DIN 53483
Dielectric Strength	50.0 - 80.0 kV/mm @Thickness 0.200 mm	VDE 0303 Part 2
Dissipation Factor	0.000030 @Frequency 1000 Hz	DIN 53483
	0.000050 @Frequency 50 Hz	DIN 53483
	0.000070 @Frequency 1e+6 Hz	DIN 53483
	<= 0.00010 @Frequency 1000 - 100000 Hz, Temperature -50.0 - 200 °C	DIN 53483
Comparative Tracking Index	>= 600 V	VDE 0303 Part 1/9.64

Thermal Properties	Original Value	Comments
CTE, linear	160 µm/m-°C @Temperature 20.0 - 100 °C	DIN 52328
	195 µm/m-°C @Temperature 20.0 - 200 °C	DIN 52328
	250 µm/m-°C @Temperature 20.0 - 300 °C	DIN 52328
Specific Heat Capacity	0.960 J/g-°C @Temperature 0.000 °C	adiabatic calorimeter
	1.03 J/g-°C @Temperature 50.0 °C	adiabatic calorimeter
Thermal Conductivity	>= 0.500 W/m-K	DIN 52612
Melting Point	320 - 340 °C	Melting Range; DTA
Maximum Service Temperature, Air	260 °C	Long Term
	300 °C	Short Term
Vicat Softening Point	110 °C	in air; DIN 53460
Minimum Service Temperature, Air	-200 °C

Descriptive Properties
Bending cycles to failure	>10^6
Heat of Combustion	4600 kJ/kg
Incandescence resistance	Level 1
Volume change between r.t. and melting range	27 to 28%
Volume Change in the melting interval	5 to 8%

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