G-Etronax EP FR4

This material is self-extinguishing. Particularly good electrical and mechanical properties at moderate temperatures. Retains good electrical properties, even at high humidity. Used in mechanical, electrical and electronic constructions. UL-94 V-0 approved – file No. E222199.

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Specifications

  • Resin: Epoxy
  • Reinforcement: Glass fabric
  • Colour: Yellow/green

Closest relevant standards

IEC 60893:EP GC 204

NEMA LI 1:FR 4

DIN 7735:Hgw 2372.2

G-Etronax EP FR4 - Sheet

EP FR4 is a material with a high glass content that is wear-resistant and has good thermoelectric properties. It is an epoxy-based material characterized by its self-extinguishing properties.

EP FR4 (EP GC 204) vs EP 10

G-Etronax EP FR4 is the flame-retardant counterpart to EP 10 (equivalent to the G10 grade): the two share the same temperature class, and the difference between them is essentially flame retardancy. FR4 is UL 94 V-0 approved and self-extinguishing, while EP 10 is not.

Across the range, our materials carry all four grades — EP 10, FR4, EP 11 and FR5 — with FR4 and FR5 each adding flame retardancy at the same temperature class as their non-retardant counterparts EP 10 and EP 11, respectively.

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Properties

Electrotechnical properties

Suitable for electrical insulation and other electrical applications.

Mechanical properties

Suitable for applications where the materials are exposed to mechanical impact.

Thermal stability

The material remains functional and retains its properties even at high temperatures.

Easy to machine

The easy-to-machine material makes for unlimited possibilities.

Overview

Mechanical properties
Bending strength at RT ISO 178 ≥ 1,5 mm 450 MPa *1
Bending strength at a high temperature ISO 178 ≥ 1,5 mm 170 MPa *B
Modulus of elasticity ISO 178 ≥ 1,5 mm 22000 MPa *1
Compressive strength ISO 604 ≥ 5 mm 550 MPa *1
Izod impact strength, parallel with layers ISO 180/2A ≥ 5 mm 65 Kj/m2 *1
Shearing strength, parallel IEC 60893-2 ≥ 5 mm 55 MPa *1
Tensile strength ISO 527 ≥ 1,6 mm 320 MPa *1
Electrical properties
Electrical strength in oil at 90°C, perpendicular IEC 60243-1 3 mm 15 kV/mm *2
Electrical strength in oil at 90°C, parallel IEC 60243-1 ≥ 3 mm 70 kV/25mm *2
Permitivity 50 MHz IEC 62631-2-1 ≤ 3 mm 4.5 *3
Permitivity 1 MHz IEC 62631-2-1 ≤ 3 mm 4.5 *3
Dissipation factor 50 MHz IEC 62631-2-1 ≤ 3 mm 0.005 *3
Dissipation factor 1 MHz IEC 62631-2-1 ≤ 3 mm 0.008 *3
Insulation resistance after submersion in water IEC 62631-3-3 All 500000 MΩ *4
Comparative tracking index IEC 60112 ≥ 3 mm 200 CTI *1
Physical and thermal properties
Temperature index 20,000 h (T.I.) IEC 60216 ≥ 3 mm 145 °C *
Fire class IEC 60695-11-10 ≥ 0.2 mm V-0 *
Density ISO 1183-A All 1.9 g/cm³ *
Water absorption ISO 62-1 50x50x3 mm 10 mg *
Smoke emission & toxicity EN 45545-2; R22, R23 & R24 *
Oxygen Index (OI) EN ISO 4589-2 %
Smoke density (Ds max.) EN ISO 5659-2 *
Smoke density (Ds max.) EN ISO 5659-2 *
Toxicity (CITNLP) NF X 70-100-1/-2 *
Toxicity (CITG, 8 min) EN 17084 *

Conditioning

1 24h/23°C/50%RH
2 24h/23°C/50%RH + 1h/ in oil at 90°C
3 96h/105°C + 1h/23°C/20%RH
4 24h/50°C/<20% RH + 24h in water at 23°C

Notes

B 1h/150°C / measured at 150°C

The above values are average values resulting from extensive tests in our laboratories. ELEKTRO-ISOLA A/S disclaims any and all liability for the performance of our materials in applications outside our control. Elektro-Isola A/S reserves the right to modify the above data without notice or further information. Furthermore, we refer to our general disclaimer.

* Note that color and surface are indicative. As this is a technical product, colour and expression may vary according to dimensions, batches and machining. If you want further information or have special decorative needs, please feel free to contact us.