What is FR-4?
FR-4 is one of the most commonly used glass melamine epoxy laminates used in plastic injection and molding applications. Its arc and flame resistance offer tremendous dexterity and strength in both dry and humid environments.
The most key feature of FR-4 is its flame retardance. However, it also offers exceptional electrical properties making it ideal for electrical and mechanical applications.
Notable FR-4 properties include:
Tensile Strength — 65,000 psi
Comprehensive Strength — 38,000 psi
Flexural Strength - LW - A 0.125” — 60,000 psi
Specific Gravity — 1.85
Bond Strength — 2,300 psi
Shear Strength — 21,500 psi
Hardness - Mohs Scale — 115
Flammability Rating — 94V-0
Water Absorption (24 hours) — 0.10
Izod Impact Strength at 49°C - LW — 14.00
Thermal Expansion Coefficient in Degrees Celsius (x10^-5) — 1.00
Maximum Operating Temperature — 284° Fahrenheit
What forms of FR-4 are available?
FR-4 is available in various shapes and sizes, including:
• Sheets
• Tubes
• Rods
All forms can be used in projects requiring various dimensions, lengths, diameters and thicknesses. If you have specific project requirements, please contact us for a consultation. We will coordinate with you on the best shape and size specifications for your project.
What are the benefits of FR-4?
There are many benefits of this epoxy material, such as:
- Flame retardance
- Low moisture absorption
- Dimensional stability
- High tensile strength and flexural impact
- Chemical, thermal shock, and radiation resistance
How is FR-4 used?
We are the Top Choice for Custom FR-4 Parts
At Aztec Plastic, we are experts in producing custom parts from FR-4 and other thermoset plastic materials. Known for its excellent balance of mechanical strength, electrical insulating properties, and flame resistance, FR-4 is a go-to material for various industries.
Whether you’re manufacturing electrical components, communication equipment, or other applications requiring high electrical insulation, FR-4 is one of your top choices. Our state-of-the-art capabilities ensure every part we produce is precise and meets your exact specifications.
Industries Served:
- Electronics & Electrical
- Automotive
- Telecommunications
- Consumer Goods
- Aerospace