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| GPO-3 is a flame retardant, rigid fiberglass reinforced plastic material 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 electrical characteristics. |
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A fiberglass reinforced thermoset polyester molded material. |
3/32 to 2 in. thicknesses in sheets 36 x 72, 48 x 96, or 48 x 60, tubes, angles, and channels, cut and fabricated per drawing . |
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Density |
112 lbs/ft3 - .065 lbs/in3 |
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Maximum operating temperature |
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electrical |
320° F (160° C) |
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mechanical |
302° F (150° C) |
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Water absorption |
0.2 - 0.44% |
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Compressive strength ASTM D-695 |
30,000 - 33,100 psi |
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Tensile strength ASTM D-638 |
7800 - 9400 psi |
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Flexural strength ASTM D-790 |
22,100 - 25,000 psi |
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Impact strength ASTM D-256 |
8.9 - 9.5 Izod ft-lbs/in notch |
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Thermal conductivity ASTM D-177 |
1.9 BTU/hr/ft2/in°F |
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Coefficient of therm expansion ASTM D-696 |
2.0 x 10-5in/in/°C |
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Arc resistance |
180 - 194 sec |
