G3 Glass Phenolic Rods are engineered from a high-quality composite of glass fiber and phenolic resin, offering a balance of mechanical strength, thermal stability, and excellent electrical insulation. These rods are durable, wear-resistant, and suitable for high-voltage applications and industrial environments requiring both strength and reliability.
Phenolic Resin + Glassfiber Cloth
1.8-2.0 g/cm³
Reddish Brown
6mm-200mm
1000mm
180
H
HB
Pallet, Wooden Box
High mechanical strength and wear resistance
Excellent thermal resistance for high-temperature operation
Superior electrical insulation properties
Durable and dimensionally stable under mechanical stress
Suitable for machining and custom fabrication
● High-voltage electrical equipment
● Transformers and switchgear components
● Structural and insulating parts in industrial machinery
● Precision components in harsh or high-temperature environments
● Custom machined parts requiring strength and insulation
| Test / Property | Unit | G-3 |
| PHYSICAL | ||
| Density | g/cm³ | 1.8 |
| Water Absorption, 24 hrs | % | 2.65 |
| MECHANICAL | ||
| Tensile Strength – lengthwise | MPa | 289 |
| Tensile Strength – crosswise | MPa | 234 |
| Flexural Strength – lengthwise | MPa | 279 |
| Flexural Strength – crosswise | MPa | 234 |
| Flexural Modulus – lengthwise | GPa | 12.4 |
| Flexural Modulus – crosswise | GPa | 9.7 |
| Izod Notched Impact – lengthwise | kJ/m² | 0.64 |
| Izod Notched Impact – crosswise | kJ/m² | 0.59 |
| Compressive Strength | MPa | 379 |
| Hardness, Rockwell M | — | 110 |
| THERMAL | ||
| Coefficient of Linear Thermal Expansion – lengthwise | 10⁻⁶ / °C | 1.46 |
| Coefficient of Linear Thermal Expansion – crosswise | 10⁻⁶ / °C | 1.76 |
| Max Operating Temperature | °C | 180 |
| Thermal Class | / | H |
| Flammability Rating | UL94 | HB |
| Thermal Conductivity | W/m·K | 0.29 |
| ELECTRICAL | ||
| Dielectric Strength (short time, 1/8" thick) | kV/mm | 18.1 |
| Dielectric Constant at 1 MHz | — | 7.3 |
| Dissipation Factor at 1 MHz | — | 0.023 |
| Arc Resistance | s | 180 |
Yes, based on drawings or samples.
UL, RoHS, REACH, CE, ISO, etc.
Usually 100 kg or 100 sheets, negotiable.
Yes, common samples free, buyer pays freight.
2-4 weeks after payment.
Yes, including labeling and packaging.
Yes, over 20 years.
T/T 30% deposit, 70% before shipment. Negotiable if supports needed.
Yes, we offer CNC machining.
Manufacturer and Exporter
No.3, Mianzhi Street, Zhucheng, Shandong, China
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