FR-4 vs. G-7 Machining
Comparison of FR-4 and G-7 Property Values
| FR-4 |
|---|
| 0.1 |
| 45,000 |
| 2,700 |
| 0.66 |
| -- |
| Material |
|---|
| Water Absorption Rating |
| Tensile Strength |
| Flexural Modulus |
| Coefficient of Linear Thermal Expansion |
| Dielectric Strength |
| G-7 |
|---|
| 0.1 |
| 20,000 |
| 1,600 |
| 0.9 |
| -- |
Material Properties
- Extremely high mechanical strength
- Good dielectric loss properties
- Good electrical strength properties
- Machinability
- Excellent heat and arc resistance
- Good electrical properties under humid conditions
- Machinability
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