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Series Fillers Moulded PTFE Products

 

Property
Test Method
Unit
Virgin PTFE
15%
Glass Fiber
25%
Glass Fiber
15% Graphite
25% Soft Carbon
25% Carbo-
graphite
60% Bronze
2% Carbon
Moulded
Specific Gravity
ASTM D792
g/cm3
2.14-2.18
2.19-2.22
2.23-2.25
2.10-2.15
2.05-2.11
2.05-2.11
3.80-3.90
Coefficient of Linear
Thermal Expansion
ASTM D696
1/*C 10-5
12-13
11-13
7.5-11
12-13
12-13
10-12
8-9
Hardness Shore D
ASTM D2240
points
≥58
60-65
62-67
55-60
60-65
62-67
65-70
Tensile Strength
ASTM D4894
ASTM D4745
N/mm2
≥24
17-24
14-21
15-20
15-20
14-18
17-23
Elongation at Break
ASTM D4894
ASTM D4745
%
≥250
250-300
230-270
170-250
150-200
70-120
100-160
Compressive Strength
at 1% Deformation
ASTM D695
N/mm2
4-5
6-7
8-9
6.5-7.5
7-9
7-9
10-11
Deformation under Load
(24h 13.7N/mm2 23*C)
ASTM D621
%
14-17
10-14
7-10
8-10.5
4.5-6.5
5-6
5-6
Permanent Deformation
(as above, after 24-h relaxation)
ASTM D621
%
7-9
6-7
4-6.5
4-6
2.5-4
2.5-4
1.5-2.5
Coefficient of Friction
ASTM D1894
/
0.06
0.12
0.13
0.07
0.13
0.11
0.13
Wear Factor at PV 100
ASTM D3702
Cm3*min*10-8
kg*m*h
2900
10-20
10-15
60
20-30
16-20
10
Extruded
Specific Gravity
ASTM D792
g/cm3
2.14-2.18
2.18-2.21
2.22-2.24
2.09-2.14
2.04-2.10
3.04-2.10
3.80-3.88
Hardness Shore D
ASTM D2240
points
51-60
60-65
62-67
55-60
60-65
62-67
65-70
Tensile Strength
ASTM D4894
N/mm2
≥20
≥15
≥13
≥14
≥14
≥12
≥13
Elongation at Break
ASTM D4745
%
≥200
≥200
≥180
≥70
≥100
≥50
≥80
 
 

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