CNC Machined

Starting from $29

G-10/FR-4 (glass cloth/epoxy resin) CNC machined by SendCutSend

G-10 is made up of a mixture of epoxy resin and glass cloth. Its superior electrical insulation properties when both wet and dry makes it the most widely used insulator in electrical applications. It boasts incredibly high mechanical strength and rigidity. It's also known for dimensional stability over a wide temperature range, along with low water absorption rates.

Please review our Design Guidelines here.



  • Terminal boards
  • Washers
  • Structural components
  • Electrical test equipment
  • Electric rotor insulation
  • Circuit boards



  • Dimensional stability
  • Mechanical strength
  • Good insulator
  • Low water absorption
  • Stable properties over wide range of temperatures and humidities
  • Superior electrical properties in wet and dry conditions
  • Fire retardant (FR-4)

Design Considerations

Maximum Part Size 46" x 46"
Sheet Thickness 0.250”, 0.375"

Mechanical Properties

Density (pounds per cubic inch) 0.065
Tensile Strength (PSI) Lengthwise, Crosswise 45,000 and 38,000
Flexural Strength (PSI) Lengthwise, Crosswise 5,000 and 65,000
Compressive Strength (PSI) 65,000
Rockwell Hardness M110
Flammability Rating VO
Melting Point 260 deg. F
Operating Temp 284 deg. F
Water Absorption @ 24 hours (%) .1
Thermal Conductivity, BTU-in/hr-ft² °F 2
Plastic and composite materials cut on our CNC machine will have small tabs.

These tabs hold your parts in place while being cut to ensure the best accuracy precision. Click below to learn what to expect and how to best design with these tabs in mind.

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