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, FR4G5, G9G7
MechanicalASTM Test MethodGlass Cloth-Reinforced Epoxy LaminatesGlass Cloth-Reinforced Melamine LaminatesGlass Cloth-Reinforced Silicone LaminateUnits
Strength to Weight Ratio----ksi
Specific Gravity @73 FD7921.821.91.68-
Tensile Strength @73 F, (ult)/(yld)D63840,00037,00023,000psi
Tensile Modulus of Elasticity @73 FD638---psi
Tensile Elongation at Break @73 FD638---%
Flexural Strength @73 FD79055,00055,00023,000psi
Flexural Modulus of Elasticity @73 FD7902,700,0002,500,000140,000psi
Shear Strength @73 FD73219,00020,00017,000psi
Comprehensive Strength, (% Deformation) @73 FD69560,000 (10)70,000 (10)45,000 (10)psi
Comprehensive Modulus of Elasticity @73 FD695---psi
Hardness, Rockwell, Scale as noted @73 FD785M110M120M100-
Hardness, Durometer, Shore D @73 FD2240----
Izod Impact, (Notched) @73 FD256 Type A7.012.08.5ft-lb/in of notch
Coefficient of Friction, (Dry vs Steel) Dynamic-----
Limiting PV, (with 4 to 1 factor of safety applied)----psi-ft/min
ThermalASTM Test MethodGlass Cloth-Reinforced Epoxy LaminatesGlass Cloth-Reinforced Melamine LaminatesGlass Cloth-Reinforced Silicone LaminateUnits
Coefficient of Linear Thermal Expansion @73 FE-831 (TMA)---in/in/F
Heat Deflection Temperature @264 psiD648---F
Tg-Glass transition termperature, (Amorphous)D3418---F
Melting Point, (VS=Vicat Softening Temp.)D3418---F
Continuous Service Temperature in Air, (Max.)-285285465F
Thermal Conductivity----BTU-in/hr-ft2-F
ElectricASTM Test MethodGlass Cloth-Reinforced Epoxy LaminatesGlass Cloth-Reinforced Melamine LaminatesGlass Cloth-Reinforced Silicone LaminateUnits
Dielectric Strength, Short TermD149400350350Volts/mil
Volume ResistivityD257---ohm-cm
Dielectric Constant @10E6 HzD1505.27.14.2-
Dissipation Factor @10E6 HzD1500.0250.0170.003-
Flammability @3.1 mm unless notedUL94V-0V-0V-0-
H2OASTM Test MethodGlass Cloth-Reinforced Epoxy LaminatesGlass Cloth-Reinforced Melamine LaminatesGlass Cloth-Reinforced Silicone LaminateUnits
Water Absorption, Immersion, 24 hoursD570(7)0.100.400.15% by weight
Water Absorption, SaturationD570(7)---% by weight