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.

Sr. No.	Property	Unit	Virgin PTFE	Chemically Modified PTFE	15% Glass Filled PTFE	25% Glass Filled PTFE	15% Glass Fibre + 5% MoS₂ 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	Elongation at 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	Compressive 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 Conductivity	10⁻⁴ cal/cm·s·°C	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

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