G-5/G-9 Melamine Glass Rods are made from a durable composite of melamine resin and glass fiber, providing high mechanical strength and excellent resistance to heat, moisture, and wear. These rods are suitable for applications where both electrical insulation and physical durability are required. They offer superior dielectric strength, making them ideal for high-voltage systems, and maintain structural integrity in temperatures up to 130°C. The combination of glass fiber and melamine resin ensures resistance to mechanical stress, chemical exposure, and moisture, making these rods versatile for electrical and structural applications.
YILONG
Melamine Resin + Glassfiber Cloth
1.8-2.0 g/cm³
Off-White
6mm-200mm
1000mm
V-0
Pallet, Wooden Box
B
B
High mechanical strength and durability
Excellent electrical insulation with high dielectric strength
Thermally stable up to 130°C
Resistant to moisture, chemicals, and mechanical wear
Glass fiber reinforcement prevents breakage under stress
● Electrical insulation components in high-voltage equipment such as transformers, switchgear, and cables
● Structural parts requiring high strength and durability
● Insulating rods, spacers, and bushings in industrial machinery
● Custom machined components exposed to heat, moisture, or mechanical stress
| Test / Property | Unit | G-5/G9 |
| PHYSICAL | ||
| Density | g/cm³ | 1.85 |
| Water Absorption, 24 hrs | % | 0.6 |
| MECHANICAL | ||
| Tensile Strength – lengthwise | MPa | 425 |
| Tensile Strength – crosswise | MPa | 352 |
| Flexural Strength – lengthwise | MPa | 425 |
| Flexural Strength – crosswise | MPa | 352 |
| Flexural Modulus – lengthwise | GPa | 13.8 |
| Flexural Modulus – crosswise | GPa | 11.7 |
| Izod Notched Impact – lengthwise | kJ/m² | 0.67 |
| Izod Notched Impact – crosswise | kJ/m² | 0.45 |
| Compressive Strength | MPa | 448 |
| Hardness, Rockwell M | — | 115 |
| THERMAL | ||
| Coefficient of Linear Thermal Expansion – lengthwise | 10⁻⁶ / °C | 1.27 |
| Coefficient of Linear Thermal Expansion – crosswise | 10⁻⁶ / °C | 1.45 |
| Max Operating Temperature | °C | 140 |
| Thermal Class | / | B |
| Flammability Rating | UL94 | V-0 |
| Thermal Conductivity | W/m·K | 0.29 |
| ELECTRICAL | ||
| Dielectric Strength (short time, 1/8" thick) | kV/mm | 11.8 |
| Dielectric Constant at 1 MHz | — | 6.3 |
| Dissipation Factor at 1 MHz | — | 0.019 |
| 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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