Brand: YILONG
Materials: Epoxy Resin + Fiberglass
Density: 1.8~2.0 g/cm³
Diameter: 4mm-300mm
Length: 1000mm
Temperature Index: 130℃
Thermal Class: B
Flammability: UL 94 V-0
Packaging: Pallet, Wooden Box
Description
FR-4 / EPGC43 Epoxy Glass Rods are made from high-quality glass fabric impregnated with epoxy resin, providing superior electrical insulation, mechanical strength, thermal resistance, and flame retardancy. These rods are designed for high-voltage and demanding industrial and electrical applications, offering reliable performance under stress, extreme temperatures (-40°C to 130°C), moisture, and chemical exposure. With excellent dielectric properties and UL94 V-0 flame-retardant performance, FR-4 / EPGC43 rods ensure safety, durability, and long-term stability in critical applications.
Features
Excellent dielectric strength for high-voltage insulation.
High mechanical strength and rigidity, resistant to impact, stress, and wear.
Superior thermal stability across a wide temperature range (-40°C to 130°C).
UL94 V-0 flame-retardant, enhancing safety in electrical and industrial applications.
High tensile strength, minimizing the risk of breaking or deformation.
Excellent resistance to moisture and chemicals.
Durable and long-lasting performance for demanding industrial and electrical uses.
Applications
Electrical insulation components in transformers, motors, and switchgear.
Structural supports in industrial machinery and equipment.
Components in electronics, automotive, and machinery exposed to extreme temperatures.
High-voltage and high-stress environments requiring combined insulation, mechanical strength, and fire safety.
Industrial equipment and machinery where long-term reliability and durability are critical.
Technical Data Sheet
| Epoxy Glass Cloth Laminated Rod | ||||||
| Testing Method GB/T 5132.2-2009 IEC 61212.2:2006 | ||||||
| Number | Items | Unit | EPGC41 G10 | EPGC42 G11 | EPGC43 FR4 | FR5 |
| 1 | Density | g/cm³ | 1.7 ~ 1.90 | 1.7 ~ 1.90 | 1.7 ~ 1.90 | 1.7 ~ 1.90 |
| 2 | water absorption | Mg/cm2 | 3 | 5 | 3 | 3 |
| 3 | Axial compression strength | MPa | ≥ 175 | ≥ 175 | ≥ 175 | ≥ 175 |
| 4 | Vertical layer bending strength | MPa | ≥ 220 | ≥ 220 | ≥ 220 | ≥ 220 |
| 5 | Tensile Strength | MPa | ≥ 300 | ≥ 300 | ≥ 300 | ≥ 300 |
| 6 | Insulation resistance after water immersion | Ω | ≥ 1.0 × 10^9 | ≥ 1.0 × 10^9 | ≥ 1.0 × 10^9 | ≥ 1.0 × 10^9 |
| 7 | Parallel layer to breakdown voltage at (90)℃ transformer oil | kV | ≥40 | ≥40 | ≥40 | ≥40 |
| 8 | Dielectric Constant | Hz | ≤5.5 | ≤5.5 | ≤5.5 | ≤5.5 |
| 9 | Temperature Index (TI) | - | ≤130 | ≤ 155 | ≤ 130 | ≤ 155 |
| 10 | Thermal Class | - | B | F | B | F |
| 11 | Flammabolity | UL 94 | - | - | V-0 | V-0 |
| Note 1: The "vertical layer bending strength" of EPGC42 type is the bending strength measured at 150 ℃ ± 3 ℃ after 1h of treatment at 150 ℃ ± 3 ℃, which shall not be less than 50% of the specified value. | ||||||
| Note 2: One of the requirements for 20s step-by-step boost test and 1min withstand voltage test for parallel layer to breakdown voltage in 90 ℃ transformer oil can be selected. | ||||||
| Note 3: The flammability test is mainly used to monitor the uniformity of laminate production, and the results so measured should not be regarded as a comprehensive indication of the potential fire hazard of these laminates under actual application conditions. | ||||||
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