PTFE Physical Properties

PTFE has an impressive array of Physical, Chemical and mechanical properties that make it the material of choice
for the most demanding applications.

Physical Properties of PTFE & Filled PTFE Compositions

Sr. No.	Property	Unit	Virgin PTFE	Chemically Modified PTFE	15% Glass Filled PTFE	25% Glass Filled PTFE	15% Glass Fibre + 5% MoS2 Filled PTFE	25% Carbon# Filled PTFE	35% Carbon# Filled PTFE	15% Graphite Filled PTFE	40% Bronze Filled PTFE	60% Bronze Filled PTFE	55% Bronze+5% MoS2
1	Density	gm/cc	2.1-2.2	2.15 – 2.2	2.10-2.24	2.24-2.25	2.23-2.24	2.10-2.20	2.11-2.13	2.14-2.16	3.1-3.2	3.80-4.00	3.8-4.00
2	Tensile Strength	kgf/cm2	210-375	325	150-225	125-200	150-220	125-200	100-175	150-200	125-150	105-140	110-145
3	Elongati-on of break	%	250-400	400-450	225-325	200-300	220-320	100-150	90-125	175-225	100-175	150-300	150-300
4	Hardness	Shore D	60-65	60-65	65-70	70-75	62-68	70-75	72-80	60-65	70-75	70-75	70-75
5	Compre-ssive Strength	kgf/cm2	40-50	45-55	65-75	75-85	65-75	75-85	80-90	65-75	85-100	115-125	115-125
6	Water Absorption	%	0	0	0.015	0.013	0.015	0	0	0	0	0	0
7	Thermal Condu-ctivity	10-4 cal cm S0C	6	6	8	9	9	13	14	14	17	19	19
8	Dielectric Strength	Kv/mm	24	30-35	16	12	16	2	2	2	Conductive	Conductive	Conductive
9	Volume Resistivity	ohm cm	1018	1020	1015	1015	1015	104	104	103	107	107	107
10	Surface Resistivity	ohm	1015	1018	1015	1015	1015	107	107	106	109	109	1010