Technical Data of Adtech Fluoroplastic Polymers

 

Polymer name

 Polytetrafluoro-
ethylene
PTFE		 Fluorinated Ethylene Propylene
FEP		 Perfluoralkoxy
PFA		 Ethylene tetrafluoroethylene
ETFE (Tefzel)
Tensile strength kp/cm2
Elongation %
Flexural modulus kp/cm2
Hardness
Melting point °C
Max. service temp. °C
Low service temperature °C
Non flammability
Water absorption 20°C, %
Weather resistance
Density g/cm3
Dielectric constant 1MHz
Dissipation factor
Resistance against organic solvents
Resistance against acids and alkalies
Flexibility
Radiation resistance, rad.
Specific Heat cal/g/°C
Thermal conduct. cal.sec.sq cm/°C/cm
Coef. of Linear expansion cm/cm/°C
Coefficient of Friction (Dynamic to steel)		 250
350
6800
D55
327
+260
 -200
Rated 94 VO
<0.01
Excellent
2.1
2.1
 .0002
Excellent
Excellent
Good
105
0.3
5 x 10-4
10-4
 0.1 		210
300
6800
D55
279
+200
-200
Rated 94 VO
<0.01
Excellent
2.1
2.1
0.0002
Excellent
Excellent
Good
106
0.28
5 x 10-4
9 x 10-5
0.2		 280
300
1400
D55
305
+260
-200
Rated 94 VO
<0.01
Excellent
2.1
2.1
0.0002
Excellent
Excellent
Good
106
0.29
5 x 10-4
9 x 10-5
0.2		 450
200
1400
D75
270
+150
-200
Rated 94 VO
<0.01
Excellent
1.7
2.6
0.0008
Excellent
Excellent
Good
108
n/a
n/a
9 x 10-5
0.3

 

CHEMICAL RESISTANCE OF PTFE, FEP & PFA
These materials known as the noble plastics, are some of the most inert materials known to man. They are unaffected by virtually all chemicals, and certainly most chemicals in industrial use. The few chemicals that are known to have an effect are:
Sodium metal, potassium metal in liquid form, or as reactive complexes which are in effect liquid solutions of these metals.
Fluorine and related oxidising compounds such as chlorine trifluoride at elevated temperatures.
There is no known solvent for PTFE, FEP & PFA.

IMPORTANT NOTE The above data is intended as a guide and is taken from resin manufacturers data. Adtech cannot take responsibility for the accuracy of the data, and customers must evaluate the material under the relevant conditions if the properties are critical to their applications.