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Semitron
ESD225
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Units
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ASTM
Test Method
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Static
Dissapative Acetal
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MECHANICAL
|
1
|
Strength
to Weight Ratio
|
ksi
|
-
|
4.1
|
|
2
|
Specific
Gravity @73 F
|
-
|
D792
|
1.33
|
|
3
|
Tensile
Strength @73 F, (ult)/(yld)
|
psi
|
D638
|
5400
(ult)
|
|
4
|
Tensile
Modulus of Elasticity @ 73 F
|
psi
|
D638
|
200000
|
|
5
|
Tensile
Elongation at Break @ 73 F
|
%
|
D638
|
15
|
|
6
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Flexural
Strength @ 73 F
|
psi
|
D790
|
7300
|
|
7
|
Flexural
Modulus of Elasticity @ 73 F
|
psi
|
D790
|
220000
|
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8
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Shear
Strength @ 73 F
|
psi
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D732
|
-
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|
9
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Compressive
Strength, (% Deformation) @73 F
|
psi
|
D695
|
8000
(10)
|
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10
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Compressive
Modulus of Elasticity @73 F
|
psi
|
D695
|
175000
|
|
11
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Hardness,
Rockwell, Scale as noted @73 F
|
-
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D785
|
M50
(R108)
|
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12
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Hardness, Durometer,
Shore D @73 F
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-
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D2240
|
-
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|
13
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Izod
Impact, (Notched) @73 F
|
ft-lb/in
of notch
|
D256
TypeA
|
1.5
|
|
14
|
Coefficient
of Friction, (Dry vs. Steel) Dynamic
|
-
|
-
|
0.29
|
|
15
|
Limiting
PV, (with 4 to 1 factor of safety applied)
|
psi-ft/min
|
-
|
2200
|
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THERMAL
|
16
|
Coefficient
of Linear Thermal Expansion @73 F
|
in/in/F
|
E-831
(TMA)
|
9.3E-05
|
|
17
|
Heat
Deflection Temperature @ 264 psi
|
F
|
D648
|
225
|
|
18
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Tg-Glass
transition temperature, (Amorphous)
|
F
|
D3418
|
-
|
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19
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Melting
Point, (VS=Vicat Softening Temp.)
|
F
|
D3418
|
320
|
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20
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Continuous
Service Temperature in Air, (Max.)
|
F
|
-
|
180
|
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21
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Thermal
Conductivity
|
BTU-in/hr-ft2-F
|
-
|
-
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ELECTRICAL
|
22
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Dielectric
Strength, Short Term
|
Volts/mil
|
D149
|
-
|
|
23
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Volume
Resistivity
|
ohm-cm
|
D257
|
1E11-1E12
|
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24
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Dielectric
Constant @ 10E6 Hz
|
-
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D150
|
-
|
|
25
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Dissipation
Factor @ 10E6 Hz
|
-
|
D150
|
-
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|
26
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Flammability @
3.1 mm unless noted
|
-
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UL94
|
HB
|
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H2O
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27
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Water
Absorbtion, Immersion, 24 Hrs
|
%
by wt.
|
D570(7)
|
2.00
|
|
28
|
Water
Absorbtion, Saturation
|
%
by wt.
|
D570(7)
|
7.20
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