NEMA G7 - Industrial Laminate Composition:The G7 silicone glass cloth board is a laminate obtained by electrolyz...
NEMA G7 – Industrial Laminate
NEMA G7 can be used in high temperature applications under humid conditions. It has excellent heat resistance
and arc resistance, it is self extinguishing and is rated as class H insulation. It is used in heating, appliance and
electrical industries, and anywhere a high strength electrical insulator is needed in high temperature applications.
Specifications:
Density 118 lbs/ft3 – 0.68 lbs/in3
Maximum operating temperature
electrical 338ºF (170ºC)
mechanical 428ºF (220ºC)
Water absorption 0.03%
Hardness (Rockwell M) 105
Compression strength 41,000 psi
Tensile strength 20,500 psi
Flexural strength 25,000 psi
Impact strength – Izod edgewise with grain 11.0 ft-lb/in
Dielectric strength 350 volts/mil
Dielectric constant (@106 cycles per second) 4.2
Volume resistivity n/a
Arc resistance 240 sec
Surface resistivity n/a
Parallel dielectric 60kv
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