Overview
G10 (EPGC 202 per IEC 60893) is the standard-grade epoxy glass laminate without flame retardant additives. Mechanically and electrically identical to FR4, but does not achieve UL 94 V-0 flame rating (rated HB).
Used in: mechanical and structural applications where flame retardancy is not required — jigs, fixtures, tooling plates, electrical insulation in non-flammable environments.
Also known as: NEMA G10, IEC 60893 EPGC 202, ISOVAL® G10 (Isovolta).
For flame-retardant version (UL 94 V-0), see FR4 (EPGC 201). 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.
Grade-specific information
Available supplier grades
Each record below names the supplied grade, source and scope. Certifications, approvals, colours and forms apply only where stated for that specific grade.
ISOVAL® TM G10
Isovolta Group
Confirm with quotation
Fine glass-cloth G10 grade selected where good machinability, chemical resistance and thermal endurance above 180 °C are required.
- Product form
- Sheet
- Thicknesses / diameters
- 0.01–6.3 in (per NEMA LI 1 G10)
- Formats / dimensions
- 110 × 48 in; 84 × 48 in; 42 × 48 in; 36 × 48 in; 125 × 48 in for selected thicknesses
- Colour
- Light green
- Surface / structure
- Fine glass-cloth epoxy laminate
Key technical data
- Standards: NEMA LI 1 G10; ASTM D709 G10; MIL-I-24768/2 GEE
- Breakdown voltage: minimum 45 kV, condition A (ASTM D229)
- Maximum water absorption: 0.1% (ASTM D229)
- Flammability: UL 94 HB
Technical-data source: ISOVAL TM G10 technical datasheet (Isovolta Group, 2021)
Grade data is taken from the named manufacturer source. Current MaterialCut supply, final dimensions and commercial conditions are confirmed in the quotation.
Technical Properties
Generic material-family guidance. Use the named supplier-grade records above for product-specific source, dimensions, colours and technical data.
| 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) |
HB |
|
| Volume Resistivity |
10⁹ |
Ω·cm |
| Dielectric Strength |
20 |
kV/mm |
