Property
Method of
testing ASTM/DIN
testing ASTM/DIN
Unit
PTFE
PFA
FEP
ETFE
ECTFE
PVDF
PP
PA
PS
PMMA
PPS
PEEK
Density
g/cm³
2.14 - 2.19
2.12 - 2.17
2.12 - 2.17
1.71 - 1.78
1.67 - 1.70
1.75 - 1.78
0.904 - 0.907
1.10 - 1.15
1.04 - 1.05
1.19
1.65
1.32
Service temperature without
loading
°C
250-260
250-260
200-205
150-180
150-180
150-170
90-100
80-100
55-70
80
250
Inflammability
non inflammable
non inflammable
non inflammable
self extinguishing
self extinguishing
self extinguishing
non inflammable
non inflammable
non inflammable
yes
self-
extinguishing
extinguishing
self-
extinguishing
extinguishing
Water absorption
53 495
%
<0.01
0.03
<0.01
<0.1
<0.1
0.03
<0.05
9 - 10
<0.3
---
0.02
0.5
Transparency
opaque
milky opaque
milky opaque
milky opaque
milky opaque
opaque
milky opaque
milky opaque
transparent
transparent
black
Radio
resistance
0.006 MGy
0.040 MGy
0.010 MGy
0.030 MGy
0.010 MGy
0.100 MGy
0.020 MGy
0.040 MGy
10 MGy
0.050 MGy
---
Food suitability
Yes
No
Yes
No
No
Yes
Yes
Yes
Yes
Yes
No
Tensile strength
(break) at 23°C
53 456
N/mm²
29-39
27-32
19-25
36-48
41-54
38-50
25-40
40-60
35-60
72
195
at 70°C
---
---
---
---
----
----
18-28
18-28
28-38
35
150
at 150°C
14-20
15-21
4-6
8-12
3.5-4.5
7.5-10.5
---
---
---
---
70
Limit of elasticity
at 23°C
53 455
N/mm²
10
14
12
24
34
46
25-40
40-80
32-57
---
---
Elongation at tear at 23°C
53 455
%
200-500
300
250-350
200-500
200-300
20-250
400-800
40-280
2-4
---
1-9
50
Tension E-module
at 23°C
53 457
N/mm²
400-800
650
350-700
500-1200
1200-1800
800-1800
1100-2100
1600-2000
2900-3500
3300
14700
Limit of bending stress at
23°C
53 452
N/mm²
18-20
15
---
25-30
50
55
45-60
40-60
breaks
---
---
Bending E-module
53 457
N/mm²
600-800
650-700
660-680
1000-1500
1700
1200-1400
800-1500
1000-1600
3000-3400
----
----
Ball hardness 132/60
53 456
N/mm²
25-30
25-30
23-29
34-40
55-65
62-68
58-80
50-80
110-160
----
----
200
Rockwell hardness
R
ASTM-d-785
---
---
---
45-55
85-95
100-115
---
90-100
---
---
100
Shore hardness D
53 505
55-72
60-65
55-60
63-75
70-80
73-85
70-75
---
---
---
---
Coefficient
of friction. dynamical against steel. dry
0.05-0.2
0.2-0.3
0.3-0.35
0.3-0.5
0.65
0.2-0.4
0.3-0.5
0.3-0.35
---
0.5
0.4
Melting temperature
ASTM 2116
°C
327
300-310
253-282
265-275
240-247
165-178
158-167
215-221
---
---
285
335
Dimensional
stability under heat A (18.5) Kp/cmł
53 461
°C
50-60
---
51
71-74
76
80-92
55-60
55-80
70-88
105
---
B (4.6) Kp/cmł
ISO R 75
130-140
---
70
104
115
146-150
85-95
165-195
76-100
---
---
Coeff. of linear thermal expansion
1K x 10
10-16
10-16
8-14
8-12
4-8
8-12
15-18
6-12
6-8
7
2.6-4.8
Thermal conductivity
at 23°C
52612
W/K x m
0.23
0.22
0.20
0.23
0.15
0.17
0.22
0.21-0.23
0.15-0.16
0.19
0.20
Specific heat at 23°C
Kj/Kg x K
1.01
1.09
1.17
1.95
---
1.38
1.68
1.5-2.1
1.18-1.34
---
---
Oxygen value
%
>95
>95
>95
30
60
43
<30
<30
<30
1.47
56
Dielectric constant at 10ł
53 483
2.0-2.1
2.06-2.1
2.1
2.6
2.6
7.8-9.0
2.26-2.4
4-12
2.4-2.74
3.6
4.0
at 106
2.0-2.1
2.06-2.1
2.06-2.1
2.6
2.5
6.4-7.6
2.25
3.5-9
2.5
2.7
4.1
Dielectric
loss factor at 103
53 483
10-4
0.3-0.5
0.2
2-8
6-8
90
120-200
<4
270-2700
1-20
0.06
2
at 106
0.7-1.0
0.8
2-8
50
90
1500-1900
<5
300-3300
1-14
0.02
20
Volume resistivity
53 482
Ω x cm
10^18
10^18
10^18
10^16
10^15
10^14
>10^16
10^12
>10^11
10^15
> 10´13
5x10^16
Surface resistivity
53 482
Ω
10^17
10^17
10^16
10^14
10^14
10^13
> 10^13
10^10
10^13
5 x 10^13
>10´15
10^12
Creep resistance
53 480
KA3c
---
KA3c
---
---
KA1
KA3c
KA3a-b
KA2-1
600
---
KC 150
Arc resistance
ASTM 495
sec
>360
---
>300
>75
135
>30
---
---
---
---
---
Dielectric strength
53 481
KV/mm
40-80
50-80
50-80
60-90
50-80
40-80
60-90
30-80
60-90
30
25-28
20
Nitrogen permeability
cm³/m² d/bar
0.7
---
3.8
4.7
1.5
0.06
4.3
0.5
0.27
1
---
Oxygen permeability
cm³/m² d/bar
2.05
---
30
15.6
0.39
0.05
19
1.2
2.35
1
---
Carbon dioxide
permeability
cm³/m² d/bar
5.7
---
60
38
17
0.2
61
4
8
---
4
Water vapor permeability
g/m²/d
0.03
---
2
0.6
9
4.5
2.1
1
14
300
---
