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Glass Epoxy (G10, FR4) Characteristics
Epoxy resins are widely used in electronic applications because they are virtually impervious to moisture. As a thermoset material, glass epoxy has outstanding mechanical and electric strength as well as good dielectric properties.
Epoxy resins are a good choice of thermosets for fabricated components for many electrical and mechanical applications.
FR4 is the fire-retardant grade of G10.
These materials offer:
- Good dimensional stability
- Outstanding insulating and electrical properties
- Moisture-resistance
- Excellent flammability rating
- UL listed
See the charts below for G-10 and FR4 material properties.
Applications for G10, FR4 Thermosets
- Power generation components
- High-temperature applications
- Structural parts
- Printed circuit boards
Contact a Dielectric Manufacturing knowledge expert to discuss the use of G10 and FR4 epoxy resins for fabrication of your parts. Call 800-367-9122 or email sales@dielectricmfg.com.
G10 Glass Epoxy Material Properties
Dielectric Manufacturing, Richfield, Wisconsin USA dielectricmfg.com G10 Thermoset Industrial Laminate Material Properties Provided By Dielectric Manufacturing, Richfield, Wisconsin
Properties
Tensile Strength 40,000 psi lengthwise 35,000 psi crosswise
Comprehensive Strength 68,000 psi flatwise 35,000 psi edgewise
Flexural Strength - .125" 55,000 psi lengthwise 45,000 psi crosswise
Modulus of Elasticity - Flexural 2,700 kpsi lengthwise 2,200 kpsi crosswise
IZOD Impact 7.0 ft-lb/in of notch lengthwise 5.5 ft-lb/in of notch crosswise
Rockwell Hardness M scale 111
Specific Gravity 1.80
Bond Strength, in lbs. 2,000
Coefficient of Thermal Expansion cm/cm- ºCx10-5 0.9
Water Absorption 0.62" thick % per 24 hrs = 0.25 0.125" thick % per 24 hrs = 0.15 0.500" thick % per 24 hrs = 0.10
Dielectric Strength, volt/mil perpendicular to laminations: Step by Step 0.62" thick = 450 0.125" thick = 350
Dissipation Factor, condition A, 1 megacycle max 0.025
Dielectric Constant condition A, 1 megacycle max 5.2
Insulation Resistance, Megaohms at Condition C 200,000
Temp. Index 0.62" and over Electrical - ºC = 130 Mechanical - ºC = 140
Mil-1-24768 2
MIL - Type GEE
FR4 Glass Epoxy Material Properties
Dielectric Manufacturing, Richfield, Wisconsin USA: dielectricmfg.com
Properties
Tensile Strength 40,000 psi lengthwise 35,000 psi crosswise
Comprehensive Strength 60,000 psi flatwise 35,000 psi edgewise
Flexural Strength - .125" 55,000 psi lengthwise 45,000 psi crosswise
Modulus of Elasticity - Flexural 2,700 kpsi lengthwise 2,200 kpsi crosswise
IZOD Impact 7.0 ft-lb/in of notch lengthwise 5.5 ft-lb/in of notch crosswise
Rockwell Hardness M scale 110
Specific Gravity 1.85
Bond Strength, in lbs. 2,000
Coefficient of Thermal Expansion cm/cm- ºCx10-5 1.0
Water Absorption 0.62" thick % per 24 hrs = 0.25 0.125" thick % per 24 hrs = 0.15 0.500" thick % per 24 hrs = 0.10
Dielectric Strength, volt/mil perpendicular to laminations: Step by Step 0.62" thick = 450 0.125" thick = 350
Dissipation Factor, condition A, 1 megacycle max 0.025
Dielectric Constant condition A, 1 megacycle max 5.2
Insulation Resistance, Megaohms at Condition C 200,000
Temp. Index 0.62" and over Electrical - ºC = 130 Mechanical - ºC = 140
Mil-1-24768 27
MIL - Type GEE-F
