G-10 Fiberglass Epoxy Laminate Sheet
Categories: Polymer; Thermoset; Epoxy; Filled/Reinforced Thermoset

Material Notes: This glass-epoxy laminate is specified for its extremely high strength and high dimensional stability over temperature. G-10 is used for terminal boards, high humidity applications, electrical and electronic test equipment and electric rotor insulation. G-10 is difficult to cut or machine and may require special equipment. G-10 is slightly stronger while G-11 is a better insulator and can withstand higher temperatures. FR-4 is a fire-retardant G-10 glass-epoxy laminate that is used primarily in the printed circuit board industry. G-10 and similar fiberglass reinforced thermosets are sometimes known as garolite.

Information provide by Boedeker Plastics.

Key Words: G10 Fiber Reinforced Composite
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Physical PropertiesMetricEnglishComments
Density 1.80 g/cc0.0650 lb/in³ASTM D792
Water Absorption 0.10 %0.10 %24 hrs.; ASTM D570
Mechanical PropertiesMetricEnglishComments
Hardness, Rockwell M 110110ASTM D785
Tensile Strength at Break 262 MPa38000 psiCrosswise; ASTM D638
 310 MPa45000 psiLengthwise; ASTM D638
Flexural Strength 448 MPa65000 psiCrosswise; ASTM D790
 517 MPa75000 psiLengthwise; ASTM D790
Flexural Modulus 16.5 GPa2400 ksiCrosswise; ASTM D790
 18.6 GPa2700 ksiLengthwise; ASTM D790
Compressive Strength 448 MPa65000 psiASTM D695
Izod Impact, Notched 6.41 J/cm12.0 ft-lb/inCrosswise; ASTM D256
 7.47 J/cm14.0 ft-lb/inLengthwise; ASTM D256
Electrical PropertiesMetricEnglishComments
Dielectric Constant 5.0
@Frequency 1e+6 Hz
@Frequency 1e+6 Hz
Dielectric Strength 31.5 kV/mm800 kV/inShort Time; 1/8 inch; ASTM D149
Dissipation Factor 0.019
@Frequency 1e+6 Hz
@Frequency 1e+6 Hz
Arc Resistance 100 sec100 secASTM D495
Thermal PropertiesMetricEnglishComments
CTE, linear 9.90 µm/m-°C
@Temperature 20.0 °C
5.50 µin/in-°F
@Temperature 68.0 °F
Lengthwise; ASTM D696
CTE, linear, Transverse to Flow 11.9 µm/m-°C
@Temperature 20.0 °C
6.61 µin/in-°F
@Temperature 68.0 °F
Crosswise; ASTM D696
Thermal Conductivity 0.288 W/m-K2.00 BTU-in/hr-ft²-°FASTM C177
Maximum Service Temperature, Air 140 °C284 °F
Flammability, UL94 HBHB

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