Epoxy Glass Laminate — Flame Retardant
Standards: NEMA FR4, IEC 60893-3-2 EPGC 201, DIN 7735 Hgw 2372
FR4 (EPGC 201 per IEC 60893) is a flame-retardant epoxy glass laminate — the most widely used electrical insulation material worldwide. Woven glass fabric impregnated with epoxy resin, achieving UL 94 V-0 flame retardancy.
Used in: printed circuit boards (PCBs), electrical insulation panels, switchgear components and structural parts requiring both mechanical strength and electrical insulation.
Also known as: NEMA FR4, IEC 60893 EPGC 201, DIN 7735 Hgw 2372, ISOVAL® FR4 (Isovolta), VOLTADUR® FR4 (Isovolta).
For non-flame-retardant version with identical mechanical properties, see G10 (EPGC 202). For higher temperature applications (up to 180°C), see G11 (EPGC 308).
⚠️ Technical data are typical values. Always verify with the manufacturer for critical applications.
Guideline values from manufacturer datasheet. Actual values may vary by grade and dimensions.
| Property | Value | Unit |
|---|---|---|
| Density | 1.85 | g/cm³ |
| Tensile Strength (Yield) | 300 | MPa |
| Tensile Modulus (E) | 22000 | MPa |
| Flexural Strength | 400 | MPa |
| Flexural Modulus | 22000 | MPa |
| Service Temp. Long-term | -50 … 130 | °C |
| Water Absorption | 0.10 | % |
| Flammability (UL94) | V-0 | |
| Volume Resistivity | 10⁹ | Ω·cm |
| Dielectric Strength | 20 | kV/mm |
Disclaimer: The technical data and information provided on this page are for reference and general guidance purposes only. They are based on manufacturer datasheets and standard testing conditions. Material properties can vary depending on dimensions, machining, and specific application environments. MaterialCut does not guarantee the accuracy of this data for specific use cases. For exact specifications and critical applications, please consult the original manufacturer datasheets or contact our technical team.
