FR-4 vs. Polycarbonate Machining

Comparison of FR-4 and Polycarbonate Property Values

FR-4
0.1
45,000
2,700
0.66
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Material
Water Absorption Rating
Tensile Strength
Flexural Modulus
Coefficient of Linear Thermal Expansion
Dielectric Strength
Polycarbonate Polycarbonate 20% Glass Filled
1.2 .06 - 1.2
12,400 10,000-13,500
410,000 420,000 - 500,000
4.5 5
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Material Properties

  • Extremely high mechanical strength
  • Good dielectric loss properties
  • Good electrical strength properties
  • Machinability
  • Easily machined
  • Excellent creep
  • Glass-filled grades available
  • High impact strength
  • FDA compliant grades available
  • Enhanced bearing & wear grades available

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