G10 FR4 G11 Epoxy Fiberglass Tube for Electrical and Industrial Insulation Applications

product details

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 in electric apparatus.

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 120°C, 155°C, and 180°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


Technical Data Sheet

G10/FR4/G11 Epoxy Fiberglass Tube
Type according EN-60893EPGC21EPGC22EPGC23-
Type according to NEMAG-10G-11FR-4G11-H
Type according to DIN 7735Hgw2375Hgw2375.4Hgw2375.2
MECHANICAL PROPERTIES




Flexural strength flatwise perpendicular to laminations (at 20°C)MPa360460410400
Compressive strength perpendicular to laminationsMPa175225-350
Cohesion of layersMPa290445-200
DIELETRIC PROPERTIES




Dielectric strength perpendicular to layers in oil 90°CkV/mm131314.413
Breakdown voltage parallel to laminationsKV60606060
Dissipation factor tg at 50 Hz
0.0020.0030.0020.003
Dissipation factor tg at 1 MHz
0.040.040.04-
Permittivity at 1MHz
5.25.25.25.2
Insulation resistance after immersion in water4x10^48x10^63.6x10^45.5x10^4
PHYSICAL PROPERTIES




Densityg/cm31.7 - 1.91.7 - 1.91.7 - 1.91.7 - 1.9
Temperature index (TI)
130155130180
Water absorption (for thickness 3mm)mg/cm30.60.50.61.5
Flammability (category)
--V0-


Get A Quote

Send message

Please fill out the form below and we will get back to you as soon as possible.

+86 15866869385

+86 15866869385