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Typical Properties of Glass Epoxy & Melamine

Property

 Test Method G-9 G-10 / FR4 G-11

Mechanical Properties

Specific Gravity ASTM D792 1.85 1.85 1.82
Tensile Strength (p.s.i.) ASTM D638 39,000 38,000 37,000
Flexural Strength (p.s.i.) ASTM D790 55,000 60,000 75,000
Compressive Strength (p.s.i.) ASTM D695 70,000 66,000 63,000
Rockwell Hardness ASTM D785 M115 M115 M112
Bond Strength (p.s.i.) ASTM D229 1,900 2,300 2,200
Shear Strength (p.s.i.) ASTM D732 18,000 21,500 22,000

Thermal Properties

Max Service Temperature (°C) - 140 140 180
Coefficient of Linear Thermal Expansion (in/in/°C) ASTM D696 0.0000060 0.0000010 0.0000020
Flammability UL94 V-0 V-0 HB

Electrical Properties

Dielectric Constant At 1 MHZ ASTM D150 7.0 4.8 5.0
Dissipation Factor At 1 MHZ ASTM D150 0.15 0.32 0.20
Dielectric Strength (V/mil) ASTM D149 450 800 900

Water Absorption Rates

Water Absorption -24 hrs.(%) ASTM D570 0.60 0.10 1.1

NOTE: The information contained herein are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers' complete material property datasheets.
  
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