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G3 Glass Phenolic Rods

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G3 Glass Phenolic Rods are made of glass fiber reinforced phenolic resin, offering high mechanical strength, excellent electrical insulation, and stable thermal performance. They are wear-resistant, chemically stable, and maintain reliable performance under high voltage and harsh industrial conditions. With good dimensional stability and easy machinability, they can be cut and processed into precision parts. Ideal for electrical insulation and industrial structural applications.
Negotiable MOQ: 500 Kilograms (Price negotiable depending on order volume and customization)
Key Specifications
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Material:
Other, Phenolic+Glassfiber
Color:
Red
Application:
Electrical Power System, Electronic Communication, Electronic Device, Industrial Equipment, Medical Equipment, Transportation
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Qingdao Yilong Insulation Material Co., Ltd.
Verified Business License
Payment & Shipping
Payment Methods:
Port of Shipment:
Qingdao, Ningbo, Shanghai, Tianjin
Delivery Detail:
30 days

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Material Other, Phenolic+Glassfiber
Color Red
Application Electrical Power System, Electronic Communication, Electronic Device, Industrial Equipment, Medical Equipment, Transportation
Thermal Rating E 120
Length 1000mm
Transport Package Pallet or Wooden Case
Specification Diameter 8-250mm
Trademark YILONG
Origin China

Description

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.


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Features

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


Applications

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 G-5/G9 G-7 G-10 G-11 G-11H
PHYSICAL






Density g/cm³ 1.8 1.85 1.8 1.8 1.8 1.9
Water Absorption, 24 hrs % 2.65 0.6 0.1 0.1 0.2 0.2
MECHANICAL






Tensile Strength – lengthwise MPa 289 425 138 310 296 280
Tensile Strength – crosswise MPa 234 352 - 262 255 250
Flexural Strength – lengthwise MPa 279 425 207 517 552 372
Flexural Strength – crosswise MPa 234 352 - 448 483 124
Flexural Modulus – lengthwise GPa 12.4 13.8 11 18.6 20.7 14
Flexural Modulus – crosswise GPa 9.7 11.7 - 16.6 18.6 12
Izod Notched Impact – lengthwise kJ/m² 0.64 0.67 0.64 0.71 0.61 16
Izod Notched Impact – crosswise kJ/m² 0.59 0.45 - 0.61 0.46 14
Compressive Strength MPa 379 448 345 448 434 346
Hardness, Rockwell M — 110 115 105 110 112 112
ELECTRICAL






Dielectric Strength (short time, 1/8" thick) kV/mm 18.1 11.8 13.8 31.5 35.4 16
Dielectric Constant at 1 MHz — 7.3 6.3 4.5 5 4.5 4.8
Dissipation Factor at 1 MHz — 0.023 0.019 0.018 0.019 0.02 0.02
Arc Resistance s 180 180 240 100 120 120
THERMAL






Coefficient of Linear Thermal Expansion – lengthwise 10⁻⁶ / °C 1.46 1.27 1.15 0.88 1.15 15
Coefficient of Linear Thermal Expansion – crosswise 10⁻⁶ / °C 1.76 1.45 1.38 0.88 1.27 20
Temperature Resistance °C 120 130 180 130 155 180
Thermal Class / E B H B F H
Flammability Rating UL94 HB V-0 V-0 HB HB HB
Thermal Conductivity W/m·K 0.29 0.29 0.29 0.29 0.29 0.25


Product Tags: Phenolic Glassfiber Rod , G3 Rod , G3 Glass Phenolic Rod

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Qingdao Yilong Insulation Material Co., Ltd.
Verified Business License
Business Type
Manufacturer
Year Established
1966
Factory Size
Above 100,000 square meters
Annual Export Value
US$10 Million - US$50 Million
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