|
|
Property
|
ASTM
test
|
Value
|
|
Physical
properties
|
Specific
gravity
|
D792
|
2.15
|
|
Water
absorption ( % )
|
D570 / 24 hrs
1/3" t
|
< 0.00
|
|
Mold
shrinkage ( cm / cm )
|
|
0.02 – 0.05
|
|
Contact
angle ( degree )
|
Angle to
level
|
110
|
|
Thermal
properties
|
Thermal
conductivity
(cal/sec/cm2, o /cm )
|
C177
|
6 x 10-4
|
|
Coefficient
of liner thermal expansion(1/oC)
|
D696 / 23 -
60oC
|
10 x 10-5
|
|
Melting
point (oC )
|
|
327
|
|
Melt
viscosity ( poise )
|
|
1011–1013
|
|
(340 -380oC)
|
|
Maximum
temperature for continuous use (oC / oF )
|
|
260 / 500
|
|
Mechanical
properties
|
Tensile
strength ( kgf / cm2 )
|
D638 / 23oC
|
140 - 350
|
|
Elongation
( % )
|
D638 / 23oC
|
200 - 400
|
|
Compression
strength ( kgf / cm2)
|
D695 / 1 %
deformation, 25oC
|
50 - 60
|
|
Tensile
modulus ( kgf / cm2 )
|
D638 / 23oC
|
4,000
|
|
Flexural
modulus ( kgf / cm2 )
|
D790 / 23oC
|
5,000 – 6,000
|
|
Impact
strength ( ft - lb / in )
|
D256 / 23oC,
Izod
|
3
|
|
Hardness
(Shore)
|
Durometer
|
D50 - D65
|
|
Deformation
under load ( % )
|
D621 / 100oC,
70 kgf / cm2, 24 hrs
|
5
|
|
|
D621 / 25oC,
140 kgf / cm2, 24 hrs
|
7
|
|
Static
friction coefficient
|
Coated -
steel surface
|
0.02
|
|
Electrical
properties
|
Dielectric
constant
|
D150 / 103Hz
|
2.1
|
|
D150 / 106
Hz
|
2.1
|
|
Dielectric
dissipation factor
|
D150 / 103
Hz
|
< 1 x 10-5
|
|
Dielectric
break down strength ( V / mil )
|
D149 / Short
time,1/ 8 in
|
480
|
|
Volume
resistivity( ohm - cm )
|
D257
|
> 1018
|
|
Chemical
resistance
|
|
Excellent
|
|
Weather
ability
|
|
Excellent
|
|
Combustibility
( % )
|
D2863 /
Oxygen concentration index
|
> 95
|
