TFE flurocarbon resin performs well in many applications without fillers.  In fact, fillers can lessen its outstanding electrical and chemical properties.  In mechanical applications, however, compounds of Teflon and inorganic fillers offer improved wear resistance, reduce creep and initial deformation, and increase stiffness and conductivity.  Hardness is increased, and the coefficient of thermal expansion is decreased.  Compounds can therefore make it possible to gain the advantages of Teflon in applications where the unfilled resin cannot be used. 

Typical Values

Properties	ASTM Test Method	Units	TFE Granular Resin	25% Glass Fiber	15% Graphite	60% Bronze
Tensile Strength, 73°F	D638-61T	psi	1,000 - 4,000	2,800 - 3,600	1,300 - 2,700	1,800 - 2,000
Elongation, 73°F	D638-61T	%	100 - 200	325	185	85
Hardness Durometer	D1706-59T	----	D50 - 65	54	55	65
Compressive Strength 73°F 1% Deform 1% Offset	D695-52T D695-52T	psi psi	600 1,000	1,000 ----	1,080 ----	1,120 ----
Coefficient of Linear Thermal Expansion per °F, 73°F - 140°F	D696-44	----	5.5 X 10-5	3-8 X 10-5	4-7 X 10-5	4-5 X 10-5
Thermal Conductivity 0.18 in.	Cenco-Finch	BTU/hr/sq. ft./ (°F/in.)	1.7	2.6	3.1	3.3
Specific Heat	----	BTU/lb./°F	0.25	----	----	----
Deformation Under Load	see below
78°F 1000psi 24hr 2000psi 24hr	D621-59 D621-59	% %	---- 15	---- 11	---- 9	---- 5
Heat Distortion Temp. 66 lb/sq in	D648-56	250	----	----	----	----
Dielectric Strength, short time, 0.080 in	D149-55T	v./mil	600	----	----	----
Dielectric Constant, 60 to 2 X 109cps	D150-59T	----	2.1	2.4 - 2.5	----	Too conductive to be measured.
Dissipation factor 60 to 2 X 109cps	S159-55T	----	0.0003	0.0753 - 0.000029	----	Too conductive to be measured.
Water Absorption	D570-54T	%	<0.01	0.015	----	0.019
Flammability	D635-56T	----	nonflammable	----	----	----
Resistance to Weathering	----	----	excellent	----	----	----
Static Coefficient of Friction against Polished Steel	----	----	0.05 - 0.08	0.10 - 0.13	0.08 - 0.10	0.08 - 0.10
Specific Gravity	D792-60T	----	2.1 - 2.3	2.22	2.19	3.97

 Material Availability:

Rods:  Diameters : 1/8 inch to 18 inches 
Plates: 3/16 inch and up thicknesses, 24 X 24 inches, 48 X 48 inches 

Profiles, tubes and special sizes are available on request