E-glass at a glance
Where to buy
Designation
| Item | Value |
|---|---|
| Designation | E-glass |
| Class | Composites |
| Type | electrical glass fiber |
E-glass at a glance
| Item | What the sources say | Source |
|---|---|---|
| Name | Electrical glass: identified as such for electrical applications; high resistance to current flow | FAA-H-8083-31B, p. 7-5 |
| Composition | Borosilicate glass | FAA-H-8083-31B, p. 7-5 |
| Advantages | Lower cost than other composites; chemical and galvanic corrosion resistance; does not conduct electricity | FAA-H-8083-31B, p. 7-5 |
| Colour and forms | White; dry fabric or prepreg | FAA-H-8083-31B, p. 7-5 |
| Typical uses | Secondary structure such as fairings, radomes and wing tips; helicopter rotor blades | FAA-H-8083-31B, p. 7-5 |
| Fabric weights | 1.4 oz/yd² (48 g/m², styles 108 and 1080) to 19.7 oz/yd² (668 g/m², style 7587); dry thickness 2.2 to 27.2 mil | Hexcel HexForce data sheets |
| Breaking strength of fabric | 80 to 750 lbf/in (warp) across those styles; 7781 is 570 / 450 lbf/in warp / fill | Hexcel HexForce data sheets |
| Service temperature | Not set by the glass; set by the resin and cure (see the resin pages) | — |
Fabric figures come from the Hexcel HexForce sheets for styles 108, 1080, 120, 1581, 7500, 7580, 7587 and 7781, all E-type yarn. Full table on the glass fabric styles page.
Notes from the guide
- Not primary structure. The sources place it in secondary structure.
- Not for radomes or advanced composites by AC 43.13-1B 3-2 methods. Those need the manufacturer’s data.
- No strength allowable here. Laminate strength depends on resin and ply schedule, which the SRM gives.
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Sources
- FAA-H-8083-31B, AMT Handbook — Airframe, Volume 1 (2023), Chapter 7 — fiberglass types and use (p. 7-5).
- AC 43.13-1B, Change 1, Chapter 3, Fiberglass and Plastics — paragraph 3-1 (p. 3-1), paragraph 3-2 (pp. 3-1 to 3-2): fiberglass laminate repairs.
- Hexcel HexForce Style 108 Fiber Glass Fabric Product Data (DSF_108) — 1.43 oz/yd², plain, 60 × 47, 2.5 mil, 80 / 70 lbf/in.
- Hexcel HexForce Style 1080 Fiber Glass Fabric Product Data (DSF_1080) — 1.41 oz/yd², plain, 60 × 47, 2.2 mil, 120 / 90 lbf/in.
- Hexcel HexForce Style 120 Fiber Glass Fabric Product Data (DSF_120) — 3.16 oz/yd², 4 harness satin, 60 × 58, 3.5 mil, 160 / 160 lbf/in.
- Hexcel HexForce Style 7580 Fiber Glass Fabric Product Data (DSF_7580) — 6.20 oz/yd², plain, 24 × 14, 7.8 mil, 300 / 200 lbf/in.
- Hexcel HexForce Style 7781 Fiber Glass Fabric Product Data (DSF_7781) — 8.81 oz/yd², 8 harness satin, 57 × 54, 8.6 mil, 570 / 450 lbf/in.
Educational reference only. not approved data. Always consult the applicable SRM, AMM, or AC 43.13-1B and your certifying authority.