What is G10?
G10 is a high-pressure fiberglass laminate consisting of multiple layers of glass cloth impregnated with an epoxy resin binder. It is renowned for its high strength, low moisture absorption, and excellent electrical insulation properties. It was the standard before flame-retardant requirements became common in electronics.
What is FR4?
FR4 is essentially the “Flame Retardant” version of G10. The “FR” stands for flame retardant, specifically meeting the UL94V-0 standard. Most modern electronics require FR4 because it self-extinguishes if ignited, providing a critical layer of safety for circuit boards.
Key Differences: FR4 vs. G10
| Feature | G10 (Garolite) | FR4 |
|---|---|---|
| Flame Retardant | No (Standard) | Yes (UL94V-0 Rated) |
| Mechanical Strength | Exceptional | High (Slightly less than G10) |
| Water Absorption | Extremely Low | Low |
| Common Use | Structural parts, Washers | PCBs, Electronic Enclosures |
Which Material Should You Choose?
When to use G10
G10 is often preferred in applications where flame retardancy is not a regulatory requirement, but mechanical toughness is paramount. It is widely used for marine applications, knife handles, and structural supports. For high-temperature or even more demanding environments, you might also consider G11 Garolite, which offers superior thermal resistance.
When to use FR4
If you are designing Printed Circuit Boards (PCBs) or any electrical component that must pass safety inspections, FR4 is the industry standard. Its ability to prevent the spread of fire makes it indispensable. We also offer specialized ESD/Antistatic FR4 for sensitive environments where static discharge must be controlled.
Available Formats at Cylex Plastics
We provide these materials in various formats to fit your fabrication needs:
- Sheets: Perfect for CNC machining and PCB fabrication.
- Rods: High-strength FR4/G10 FRP Rods for structural components.
- ESD/Antistatic: Specialized ESD G10 for cleanroom and electronics assembly.
Conclusion
While FR4 has largely replaced G10 in the electronics industry due to safety regulations, G10 remains a powerhouse for industrial and mechanical applications. Choosing the right material ensures the longevity and safety of your product.
Need expert advice on your next project? Cylex Plastics is here to provide high-quality materials and fabrication services tailored to your specifications.
Ready to start your order? Contact Cylex Plastics today for a quote on FR4, G10, or custom fabrication services.
