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Help CenterG10/FR4/G11 Epoxy Fiberglass Tube
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Description
The Epoxy Fiberglass Tube is manufactured using alkali-free glass fabric bonded with epoxy resin.Produced through heat-rolling, tightening, baking, and curing processes, this product exhibits highmechanical properties and maintains stable electrical properties even in high-humidityenvironments. It is suitable for use as insulation structural parts within mechanical, electrical, andelectronic equipment.
Standards and Classification We offer tubes compliant with various international standards:
GOST Standard: 3640
NEMA Standard: G10, FR4, G11, FR5
IEC Standard: EPGC21, EPGC22, EPGC23
Features
3640: Features higher mechanical and electrical insulating properties with low waterabsorption. Designed for insulating structural parts.
EPGC21: Maintains stable electrical insulating properties under heavy humidity. Used inmechanical, electrical, and electronic applications.
EPGC22: Similar to EPGC21 but offers superior mechanical properties underhigh temperatures.
EPGC23: Similar to EPGC21 but includes fire retardant properties. NEMA Series (G10, FR4, G11, FR5):
All types possess excellent mechanical strength, dielectric loss properties, and electricstrength in both dry and humid conditions.
G10 & FR4: Share the same mechanical and electrical properties; FR4 adds fireretardant properties.
G11 & FR5: Offer higher thermal properties compared to G10 and FR4; FR5 adds fireretardant properties.
Temperature Resistance: Available in 130°C, 155°C grades.
Applications
Insulating structural components in electrical equipment
Electrical insulation parts for high-voltage electrical equipment
Components for motors, generators, transformers, and switchgear
Structural and support components for electrical machinery
Electrical and electronic equipment operating under humid conditions
EPGC21
Applications requiring stable electrical insulation under high humidity
Anti-corrosion and solvent-resistant piping and structural components
EPGC22 (High-Temperature Grade)
Machinery and electrical equipment subjected to higher mechanical stress
Applications requiring improved mechanical performance at elevated temperatures
EPGC23 (Flame-Retardant Grade)
Flame-retardant insulating structural components
Electrical and electronic devices with enhanced fire safety requirements
Safety-critical electrical installations
| G10/FR4/G11 Epoxy Fiberglass Tube | |||||
| EN-60893 | Unit | EPGC21 | EPGC22 | EPGC23 | - |
| NEMA | G-10 | G-11 | FR-4 | G11-H | |
| DIN 7735 | Hgw2375 | Hgw2375.4 | Hgw2375.2 | ||
| MECHANICAL PROPERTIES | |||||
| Flexural strength flatwise perpendicular to laminations (at 20°C) | MPa | 360 | 460 | 410 | 400 |
| Compressive strength perpendicular to laminations | MPa | 175 | 225 | - | 350 |
| Cohesion of layers | MPa | 290 | 445 | - | 200 |
| DIELETRIC PROPERTIES | |||||
| Dielectric strength perpendicular to layers in oil 90°C | kV/mm | 13 | 13 | 14.4 | 13 |
| Breakdown voltage parallel to laminations | KV | 60 | 60 | 60 | 60 |
| Dissipation factor tg at 50 Hz | - | 0.002 | 0.003 | 0.002 | 0.003 |
| Dissipation factor tg at 1 MHz | - | 0.04 | 0.04 | 0.04 | - |
| Permittivity at 1MHz | - | 5.2 | 5.2 | 5.2 | 5.2 |
| Insulation resistance after immersion in water | MΩ | 4x10^4 | 8x10^6 | 3.6x10^4 | 5.5x10^4 |
| PHYSICAL PROPERTIES | |||||
| Density | g/cm3 | 1.7 - 1.9 | 1.7 - 1.9 | 1.7 - 1.9 | 1.7 - 1.9 |
| Water absorption (for thickness 3mm) | mg/cm3 | 0.6 | 0.5 | 0.6 | 1.5 |
| THEMAL PROPERTIES | - | ||||
| Temperature index (TI) | - | 130 | 155 | 130 | 180 |
| Flammability (category) | - | - | - | V0 | - |
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