Physical Properties and Characteristics of Fluoro-polymers and Hybrids

GENERAL
Property
Norm DIN od. ASIM
Unit
PTFE
PFA
FEP
ETFE
PVDF
Thermopl. Copolyester
Polyester Elastomer
Density
53 479
G/cm³
2-14 2,19
2,12-2,17
2,12-2,17
1,71-1,78
1,75-1,78
1,35-1,4
1,2
Max. continuous operating temp.
C
250-260
250-260
200-205
150-180
150-170
150-180
130
Flammability
Non combustible
Non combustible
Non combustible
Self extinguishing
Self extinguishing
Self extinguishing
Combustible
Water Absorption
53 495
%
<0,01
0,03
<0,01
<0,1
0,03
<0,03
0,5
MECHANICAL
Property
Norm DIN od. ASIM
Unit
PTFE
PFA
FEP
ETFE
PVDF
Thermopl. Copolyester
Polyester Elastomer
Tensile Strength at 23C
53 455
N/ mm²
29-39
27-32
19-25
36-48
38-50
70-95
45
70
37°
150
14-20
15-21
4-6
8-12
7,5-10,5
Elasticity at 23C
53 455
N/ mm²
10
14
12
24
46
Tensile stress at 23C
53 455
%
200-500
300
250-350
200-500
20-250
4-12
400-700
Tensile Modulus at 23C
53 457
N/ mm²
400-800
650
350-700
500-1200
800-1800
1800-2600
14-16
Limit of Flexibility at 23C
53 452
N/ mm²
18-20
15
25-30
55
Bending modulus
53 457
N/ mm²
600-800
650-700
660-680
1000-1500
1200-1400
4500-5000
180-210
Ball pressure hardness 132/60
53 456
N/ mm²
25-30
25-30
23-29
34-40
62-68
Rockwell Hardness R
ASIM-D-785
45-55
100-115
88
Shore hardness D
53 505
55-72
60-65
55-60
63-75
73-85
55
Coefficient of friction-v-steel
0,05-0,2
0,2-0,3
0,3-0,35
0,3-0,5
0,2-0,4
0,2-0,4
THERMAL
Property
Norm DIN od. ASIM
Unit
PTFE
PFA
FEP
ETFE
PVDF
Thermopl. Copolyester
Polyester Elastomer
Melt temperature
ASTM 2116
°C
327
300-310
253-282
265-275
165-178
340-400
211
Heat deflection temp A(18,5) Kp/cm
53 461
°C
50-60
51
71-74
80-92
290-295
B (4,6) Kp/cm³
ISOR 75
130-140
70
104
146-150
Coefficient of linear expansion
I/ K.10-5
10-16
10-16
8-14
8-12
8-12
2-5
Thermal conductivity at 23C
52 612
W/ k.m
0,23
0,22
0,20
0,23
0,17
0,38
Specific Temp. at 23C
KJ/ Kg.K
1,01
1,09
1,17
1,95
1,38
1,3
Oxygen index
%
>92
>95
>95
30
43
<30
ELECTRICAL
Property
Norm DIN od. ASIM
Unit
PTFE
PFA
FEP
ETFE
PVDF
Thermopl. Copolyester
Polyester Elastomer
Delectric dissipation factor 10³
53 483
2,0-2,1
2,06-2,1
2,1
2,6
7,8-9,0
3,1-3,7
4,6
106
2,0-2,1
2,06-2,1
2,1
2,6
6,4-7,6
2,9-3,4
Delectric constant at 10³
54 483
10-4
0,3-0,5
0,2
2-8
6-8
120-200
100
106
0,7-1,0
0,8
2-8
50
1500-1900
250
Flow Resistivity
53 482
Ω cm
1018
1018
1018
1016
1014
1015
1013
Surface Resistivity
53 482
Ω
1017
1017
1016
1014
1013
1014
Creep Resistivity
53 480
KA3c
KA3c
KA1
Arc Resistivity
ASTM 495
sec
>360
>300
>75
>30
Dielectric Strength
53 481
KV/ mm
40-80
50-80
50-80
60-90
40-80