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| NEMA G3 has high mechanical strength
with excellent electrical properties and has a low water absorption rate.
It has high heat resistance and high impact resistance. It is used in
structural applications such as seals and gaskets.
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An mechanical grade of glass cloth laminate impregnated and cured with phenolic resin. |
Sheet sizes 36 x 48, 48 x 48, 48 x 96, and 48 x 108 in thicknesses .031 in. to 5 in.; cut and fabricated per drawing . |
Natural |
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Density |
121 lbs/ft3 - .070 lbs/in3 |
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Maximum operating temperature |
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electrical |
284° F (140° C) |
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mechanical |
338° F (170° C) |
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Water absorption |
0.8% |
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Hardness (Rockwell M) |
n/a |
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Compressive strength |
55,000 psi |
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Tensile strength |
34,000 psi |
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Flexural strength |
42,000 psi |
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Impact strength - Izod edgewise with grain |
11.0 ft-lb/in |
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Dielectric strength |
400 vpm |
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Dielectric constant (@ 106 cycles per second) |
7.3 |
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Volume resistivity |
1.3x 104 megohm-cm |
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Arc resistance |
n/a |
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Surface resistivity |
4.6 x 104 megohms |
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Parallel dielectric |
50 kv |
