MECHANICAL PROPERTIES
PROPERTY	ASTM STANDARD	UNIT	PTFE	PFA
Specific Gravity	D792		2.13-2.22	2.15
Tensile Strength	D638	MPa	21-28	25
		(psi)	(3,000- 4,000)	3800
Enlongation	D638	%	200-400	300
Flexural Modulus	D790	MPa	500	600
		(psi)	-72,000	85000
Floding Endurance	D2176	(MIT)	>10^5	50-500 X 10^3
		cycles
Impact Strength	D256	J/m	189	No Break
		(ft*lb/in)	-3.5
Hardness	D2240	Shore D	50-85	60
Coefficient of Friction	D1894	<3 m/min	0.1	0.2
Dynamic		<10 ft/min

THERMAL PROPERTIES
PROPERTY	ASTM STANDARD	UNIT	PTFE	PFA
Melting Point	DTA,E-168	C	327	305
		(F)	621	582
Upper Service	UL746B	C	250	260
Temperature		(F)	500	500
Flame Rating	UL94		VO	VO
Limiting Oxygen	D2883	%	>95	>95
Heat of Combustion	D240	MJ/kg	5.1	5.3
		(Btu/lb)	2,200	2,300

ELECTRICAL PROPERTIES
PROPERTY	ASTM STANDARD	UNIT	PTFE	PFA
Dielectric Constant	D150	1 MHz	2.1	2.1
Dissipation Factor	D150	1 MHz	0.0001	0.0001
Arc Resistance	D495	sec	>300	>180
Volume Resistivity	D257	ohm*cm	10^18	10^16
Surface Resistivity	D257	ohm/sq	10^18	10^16