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Home > Products
> Fiberglass Sheet Polyester Grade
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Fiberglass
Sheet Polyester Grade
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1) GPO-3
is A fiberglass reinforced polymer laminate. This material
is the industry standard for flame & arc/track
resistant electrical components. GP03 also offers an
excellent combination of high strength, flame resistance,
and low smoke, flame, & toxicity generation. GP03
is a NEMA approved material per NEMA procedure NEMA
LI-1.
2)
Combines high arc and track resistance, highly flame
resistant. For use on 2500+ voltage equipment. 94V-O
flame retardance rating. 22,100 PSI flexural strength.
Red in colour
3)
GPO-3 Glass Polyester Laminate
GPO-3 laminate performs well in electrical applications that require high arc
and carbon track resistance as well as flame resistance, physical strength, and
moderate heat resistance. Grade GPO-3 laminate is used extensively in the making
of phase and end barriers, insulating supports, bus bar supports
and mounting panels in switchgear and
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types of electrical apparatus. Grade GPO-3 is a UL
recognized product with a temperature index of 120
degrees celsius electrical and 140 degrees celsius
mechanical. Grade GPO-3 is produced in three standard
colors: red, black, and white and is molded in thicknesses
of 1/32?to 2 used for general purpose electrical and/or
mechanical applications where low cost is desired.
GPO-3 can withstand higher temperatures than GPO-1
or GPO-2, and has better
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Units
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ASTM Test Method
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FR Polyester Glass Laminate
(GPO-3)
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MECHANICAL
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1
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Strength to Weight Ratio |
ksi
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-
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2
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Specific Gravity @73 F |
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D792
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1.80
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3
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Tensile Strength @73 F, (ult)/(yld) |
psi
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D638
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9000
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4
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Tensile Modulus of Elasticity
@ 73 F |
psi
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D638
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-
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5
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Tensile Elongation at Break @
73 F |
%
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D638
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-
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6
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Flexural Strength @ 73 F |
psi
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D790
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21500
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7
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Flexural Modulus of Elasticity
@ 73 F |
psi
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D790
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-
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8
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Shear Strength @ 73 F |
psi
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D732
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-
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9
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Compressive Strength, (% Deformation)
@73 F |
psi
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D695
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33000
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10
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Compressive Modulus of Elasticity
@73 F |
psi
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D695
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-
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11
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Hardness, Rockwell, Scale as
noted @73 F |
-
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D785
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M-105
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12
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Hardness, Durometer, Shore D
@73 F |
-
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D2240
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-
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13
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Izod Impact, (Notched) @73 F |
ft-lb/in of notch
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D256 TypeA
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8.3
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14
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Coefficient of Friction, (Dry
vs. Steel) Dynamic |
-
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-
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-
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15
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Limiting PV, (with 4 to 1 factor
of safety applied) |
psi-ft/min
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-
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-
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THERMAL
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16
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Coefficient of Linear Thermal
Expansion @73 F |
in/in/F
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E-831 (TMA)
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-
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17
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Heat Deflection Temperature @
264 psi |
F
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D648
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-
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18
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Tg-Glass transition temperature,
(Amorphous) |
F
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D3418
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-
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19
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Melting Point, (VS=Vicat Softening
Temp.) |
F
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D3418
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-
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20
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Continuous Service Temperature
in Air, (Max.) |
F
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-
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284
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21
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Thermal Conductivity |
BTU-in/hr-ft2-F
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-
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-
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ELECTRICAL
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22
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Dielectric Strength, Short Term |
Volts/mil
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D149
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400
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23
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Volume Resistivity |
ohm-cm
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D257
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-
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24
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Dielectric Constant @ 10E6 Hz |
-
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D150
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4.1
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25
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Dissipation Factor @ 10E6 Hz |
-
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D150
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.027
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26
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Flammability @ 3.1 mm unless
noted |
-
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UL94
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V-0
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H2O
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27
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Water Absorbtion, Immersion,
24 Hrs |
% by wt.
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D570(7)
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0.12
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28
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Water Absorbtion, Saturation |
% by wt.
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D570(7)
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-
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Fiberglass
Pultruded Products
