G-Etronax SI - Sheet

Retains its good electrical properties at high temperatures. Self-extinguishing. Low dielectric dissipation factor at high frequencies. Thermal class 210°C insulation material.

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Specifications

  • Resin: Silicone
  • Reinforcement: Glass fabric
  • Colour: Cream

Closest relevant standards

IEC 60893:SI GC 202

NEMA LI 1:G-7

DIN 7735:Hgw 2572

G-Etronax SI - Sheet

This silicone-based G-7 composite sheet is used in mechanical, electrical and electronic constructions at elevated temperatures. SI (SI GC 202) retains good electrical properties at high temperatures. and is self-extinguishing. It is used as nozzle insulators in wire-welding guns where a shielding gas is used, and as insulation material in large induction furnaces for smelting metals among other applications.

G-Etronax SI vs. PI

G-Etronax SI (SI GC 202) and PI are both used at elevated temperatures, but the gap between them is mechanical, not thermal: SI softens at high temperature and has markedly lower mechanical properties than PI. A key advantage of SI is that it does not delaminate under prolonged heat exposure. It can hold up for a long time even under sustained high heat.

Also available as silicon tube.

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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.

Low density

The compact structure of the material optimises its mechanical and electrotechnical properties.

Easy to machine

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

Overview

Mechanical properties
Bending strength at RT ISO 178 ≥ 1,5 mm 135 MPa *1
Bending strength at a high temperature ISO 178 ≥ 1,5 mm MPa *
Modulus of elasticity ISO 178 ≥ 1,5 mm 13000 MPa *1
Compressive strength ISO 604 ≥ 5 mm 330 MPa *1
Izod impact strength, parallel with layers ISO 180/2A ≥ 5 mm 45 Kj/m2 *1
Shearing strength, parallel IEC 60893-2 ≥ 5 mm 15 MPa *1
Tensile strength ISO 527 ≥ 1,6 mm 160 MPa *1
Electrical properties
Electrical strength in oil at 90°C, perpendicular IEC 60243-1 3 mm 7 kV/mm *2
Electrical strength in oil at 90°C, parallel IEC 60243-1 ≥ 3 mm 50 kV/25mm *2
Permitivity 50 MHz IEC 62631-2-1 ≤ 3 mm 4 *3
Permitivity 1 MHz IEC 62631-2-1 ≤ 3 mm 4 *3
Dissipation factor 50 MHz IEC 62631-2-1 ≤ 3 mm 0.003 *3
Dissipation factor 1 MHz IEC 62631-2-1 ≤ 3 mm 0.003 *3
Insulation resistance after submersion in water IEC 62631-3-3 All 100000 MΩ *4
Comparative tracking index IEC 60112 ≥ 3 mm 400 CTI *1
Physical and thermal properties
Temperature index 20,000 h (T.I.) IEC 60216 ≥ 3 mm 220 °C *
Fire class IEC 60695-11-10 ≥ 3 mm V-0 *
Density ISO 1183-A All 1.9 g/cm³ *
Water absorption ISO 62-1 50x50x3 mm 12 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

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.