Teflon Properties®

Mechanical Properties
Property	ASTM Standard	Unit	Teflon® PTFE	Teflon® FEP	Teflon® PFA	Teflon® ETFE

Specific Gravity	D792	-	2.15	2.15	2.15	1.76

Tensile Strength	D1457, D1708, D638	MPa	21-35	23	25	40-47
		psi	3,000-5,000	3,400	3,600	5,800-6,700

Elongation	D1457, D1708, D638	%	300-500	325	300	150-300

Flexural Modulus	D790	MPa	500	600	600	1,200
		psi	72,000	85,000	85,000	170,000

Folding Endurance	D2176	(MIT)	>10⁶	5-80 x 10³	10-500 x 10³	10-27 x 10³
		cycles

Impact Strength	D256	J/m	189	No break	No break	No break
		ft.lb/in	3.5

Hardness	D2240	Shore D	50-65	56	60	72
		pencil	HB	HB

Abrasion Resistance

• Bell Abrasion (1)	-	g/µm	85	-	-	-

• Sliding Arm (2)	-	mg	7.9-9.7	11.1-15.2	-	13.4

• Tabor Abrasion (3)	-	mg	12	14.8	-	-

Scratch Resistance	-	-	-	-	-	-

scratch master	-	-	-	-	-	-

• initial (4)	-	kg	5.7-7.0	5.1-11.4	-	-

• complete (5)	-	kg	7.3-10.7	8.5-13.2	-	-

Coefficient of Friction	D1894	-	-	-	-	-

• static	-	-	0.12-0.15	0.12-0.20	0.2	0.24-0.50

• dynamic	-	-	0.05-0.10	0.08-0.3	-	0.3-0.4

Contact Angle	-	-	-	-	-	-

• water	-	degree	104° -111°	95°-105°	104°-111°	90°-100°

Notes:
1. Bell Abrasion Tester: grams abrasive/micrometers
2. Sliding Arm Test: 1,000 cycles, 500 gr load, 400 Emery paper, 35.5 sq. cm surface
3. Tabor Abrasion: Cs 17 wheel, 1 kg load, 1,000 cycles, weight loss in mg
4. Scratch Master: initial = first sign of substrate
5. Scratch Master: complete = total removal of film
6. Salt Spray Resistance: 5% NaCl @ 35°C/95°F, hours to failure
7. Detergent Resistance: hours to failure
8. Dielectric Strength: 100 micrometers film

The values shown in this table represent average experiences from numerous testing sources and are not intended to be specifications. These values will vary depending upon the individual compositions of the primers and topcoats and the systems used. For further information on the properties of these coating systems, and examples of how they have led to the development of new products, increased production rates and resultant cost savings, you should consult DuPont or a Licensed Industrial Applicator.

All technical advice, application suggestions, recommendations and services are rendered by the Seller gratis. They are based on technical data which the Seller believes to be reliable and are intended for use by persons having skill and know-how, at their own discretion and risk. Seller assumes no responsibility for results obtained or damages incurred for their use by Buyer in whole or in part. Such technical advice, application suggestions, recommendations or services are not to be taken as a license to operate under, or intended to suggest infringement of, any existing patent.

Thermal Properties
Property	ASTM Standard	Unit	Teflon® PTFE	Teflon® FEP	Teflon® PFA	Teflon® ETFE

Melting Point	D3418	°C	327	260	305	267
		°F	621	500	582	512

Cure Temperature		°C	380-430	360-390	380-400	300-325
		°F	715-805	680-735	715-750	575-615

Max. Use Temperature
• Continuous	-	°C	290	205	260	150
		°F	550	400	500	300

• Intermittent	-	°C	315	230	290	200
		°F	600	450	550	390

Flame Rating**	UL94		V0	V0	V0	V0

Limiting Oxygen Index	D2863	%	>95	>95	>95	30-36

Heat of Combustion	D240	MJ/kg	5.1	5.1	5.3	13.7
		Btu/lb	2,200	2,200	2,300	5,900

Thermal Conductivity	-	Btu.in/h.ft2.°F	1.7	1.4	1.3	1.65
		W/m-k	0.25	0.20	0.19	0.24

** Statements regarding behavior in a flame situation are not intended to reflect hazards presented by this or any other material when under actual fire conditions.

Chemical Properties
Property	ASTM Standard	Unit	Teflon® PTFE	Teflon® FEP	Teflon® PFA	Teflon® ETFE

Property Chemical/Solvent Resistance	D543		Excellent	Excellent	Excellent	Excellent

Water Absorption, 24 h	D570	%	<0.01	<0.01	<0.03	<0.03

Salt Spray Resistance (6)	B-117

• on aluminum		Hours	744+	744+	1000	1000

• on steel		Hours	192

Detergent Resistance (7)
• on aluminum		Hours	264	744
• on grit-blasted aluminum		Hours	624	600
• on grit-blasted steel		Hours	24	480
Weather Resistance	Florida Exposure	Years Unaffected	20	20	10	15

Electrical Properties
Property	ASTM Standard	Unit	Teflon® PTFE	Teflon® FEP	Teflon® PFA	Teflon® ETFE

Dielectric Constant	D150	1 MHz	2.1	2.1	2.1	2.6

Dielectric Strength (8)	D149	V/µm	18	53	80	79

Dissipation Factor	D150	1 MHz	<0.0001	0.0006	0.0001	0.007

Arc Resistance	D495	sec	>300	>300	>180	122

Volume Resistivity	D257	ohm.cm	>10¹⁸	>10¹⁸	>10¹⁸	>10¹⁷

Surface Resistivity	D257	ohm/sq	>10¹⁸	>10¹⁶	>10¹⁷	>10¹⁵

Teflon® is a registered trademark of DuPont.
* This data reproduced from published Dupont literature H-75151

Technical Literature

Teflon Properties®

Mechanical Properties

Thermal Properties

Chemical Properties

Electrical Properties