Materials
G-7 Glass-Silicone Laminate
Product Description
G-7 glass-silicone laminate has good electrical properties under humid conditions, excellent heat and arc resistance, and is self-extinguishing.
Typical Applications
G-7 is used for electrical grade insulation, and for heating & appliance insulation. Meets Mil-I-247681/17 GSG
| Typical Property Values | |||
| Property | Test Method | Unit | Value |
| Physical | |||
| Density | D792 |
(lb/in3) |
0.065 |
| Water Absorption | ASTM D570 | 24 hrs (%) | 0.10 |
| Rockwell Hardness M | ASTM D785 | M | 105 |
| Mechanical | |||
| Tensile Strength at Break | ASTM D638 | psi | 20,000 |
| Flexural Strength -lengthwise | D790 | psi | 30,000 |
| Flexural Modulus -lengthwise | D790 | Kpsi | 1,600 |
| IZOD Notched Impact -lengthwise | D256 | (ft-lb/in) | 13.0 |
| Compressive Strength | D695 | (psi) | 50,000 |
| Thermal | |||
| Coefficient of Thermal Expansion -lengthwise | ASTM D696 | in/in/°F | 7.20 μin/in-°F |
| Coefficient of Thermal Expansion -crosswise | ASTM D696 | in/in/°F | 9.00 μin/in-°F |
| Max Operating Temp (°F / °C) | 428 / 220 | ||
| Thermal Conductivity | C177 | (BTU-in/ft2-hr-°F) | 2.0 |
| Thermal Conductivity | C177 | (W/m-K ) | .288 |
| Flammability Rating | UL94 | HB | |
| Electrical | |||
| Dielectric Strength | D149 | kV/in | 350 |
| Dielectric Constant | D150 | @Frequency 1e+6 Hz | 4.5 |
| Dissipation Factor | D150 | @Frequency 1e+6 Hz | 0.0180 |
| Arc Resistance (sec) | D495 | (sec) | 240 |
|
Typical values intended for reference and comparison purposes only. This data should not be used as the sole basis for design specifications or quality control. Contact us for specific manufacturers’ property datasheets for more complete technical information. All values at 73°F (23°C) unless otherwise noted. |
|||
Your Complete Source for G10/FR-4 CNC, Drilling and Custom G10/FR-4 Machining Services, Phenolics Machining
JMJ Profile Inc. 154 cooper Rd., Unit 1303 West Berlin NJ 08091
Email: contact us