Glass-reinforced thermoset polymer matrices are synthetic polymer reinforcements that have been developed and used in many applications.

CCT Precision Machining is an industry leader in Thermoset Machining/Garolite Machining.  We are able to maintain tolerances, create features and produce parts that even the material manufacturers deem impossible. By using high speed spindles capable of turning at 30,000 RPM, tightly controlled work envelopes and cutting edge work holding systems, CCT Precision can machine high pressure laminate components from the most simple part to the most intricate part on any of the 25+ machines in our facility.

  • 27” x 15” x 13” Work Envelope
  • Tolerances to +/- .00025” (0.006 mm)
  • Hole Diameters to 0.003” (0.076 mm)

If precision machining of Thermoset Material parts is what you are looking for, Request a Quote today.

  • G10 corresponds to MIL-I-24768/2, MIL-P -18177 GEE and LP-509
  • FR4 corresponds to MIL-I-24768/27
  • G5 corresponds to MIL-I-24768/8, MIL-P-15037 GMG and LP-509
  • G9 corresponds to MIL-I-24768/1, MIL-P-15037 GME and LP-509
  • G7 corresponds to MIL-I-24768/17, MIL-P-997 GSG and LP-509
  • G11 corresponds to MIL-I-24768/3, MIL-P-18177 GEB and LP-509
  • FR5 corresponds to MIL-I-24768/28
G10, FR4 G5, G9 G7
Mechanical ASTM Test Method Glass Cloth-Reinforced Epoxy Laminates Glass Cloth-Reinforced Melamine Laminates Glass Cloth-Reinforced Silicone Laminate Units
Strength to Weight Ratio - - - - ksi
Specific Gravity @73 F D792 1.82 1.9 1.68 -
Tensile Strength @73 F, (ult)/(yld) D638 40,000 37,000 23,000 psi
Tensile Modulus of Elasticity @73 F D638 - - - psi
Tensile Elongation at Break @73 F D638 - - - %
Flexural Strength @73 F D790 55,000 55,000 23,000 psi
Flexural Modulus of Elasticity @73 F D790 2,700,000 2,500,000 140,000 psi
Shear Strength @73 F D732 19,000 20,000 17,000 psi
Comprehensive Strength, (% Deformation) @73 F D695 60,000 (10) 70,000 (10) 45,000 (10) psi
Comprehensive Modulus of Elasticity @73 F D695 - - - psi
Hardness, Rockwell, Scale as noted @73 F D785 M110 M120 M100 -
Hardness, Durometer, Shore D @73 F D2240 - - - -
Izod Impact, (Notched) @73 F D256 Type A 7.0 12.0 8.5 ft-lb/in of notch
Coefficient of Friction, (Dry vs Steel) Dynamic - - - - -
Limiting PV, (with 4 to 1 factor of safety applied) - - - - psi-ft/min
Thermal ASTM Test Method Glass Cloth-Reinforced Epoxy Laminates Glass Cloth-Reinforced Melamine Laminates Glass Cloth-Reinforced Silicone Laminate Units
Coefficient of Linear Thermal Expansion @73 F E-831 (TMA) - - - in/in/F
Heat Deflection Temperature @264 psi D648 - - - F
Tg-Glass transition termperature, (Amorphous) D3418 - - - F
Melting Point, (VS=Vicat Softening Temp.) D3418 - - - F
Continuous Service Temperature in Air, (Max.) - 285 285 465 F
Thermal Conductivity - - - - BTU-in/hr-ft2-F
Electric ASTM Test Method Glass Cloth-Reinforced Epoxy Laminates Glass Cloth-Reinforced Melamine Laminates Glass Cloth-Reinforced Silicone Laminate Units
Dielectric Strength, Short Term D149 400 350 350 Volts/mil
Volume Resistivity D257 - - - ohm-cm
Dielectric Constant @10E6 Hz D150 5.2 7.1 4.2 -
Dissipation Factor @10E6 Hz D150 0.025 0.017 0.003 -
Flammability @3.1 mm unless noted UL94 V-0 V-0 V-0 -
H2O ASTM Test Method Glass Cloth-Reinforced Epoxy Laminates Glass Cloth-Reinforced Melamine Laminates Glass Cloth-Reinforced Silicone Laminate Units
Water Absorption, Immersion, 24 hours D570(7) 0.10 0.40 0.15 % by weight
Water Absorption, Saturation D570(7) - - - % by weight