Polyester resin facts
Where to buy| Item | What the source says | Source |
|---|---|---|
| Cost and speed | Relatively inexpensive, fast processing, used for low-cost applications | FAA-H-8083-31B, p. 7-6 |
| Aircraft grade | Low-smoke polyester resins for interior parts | FAA-H-8083-31B, p. 7-6 |
| Processes | Matched metal molding, wet layup, press (vacuum bag) molding, injection molding, filament winding, pultrusion, autoclaving | FAA-H-8083-31B, p. 7-6 |
| Fiber sizing | T700S sizing 50C suits epoxy, phenolic, polyester and vinyl ester | Toray T700S data sheet |
| Cure speed against epoxy | Epoxy processing and curing is slower than polyester | FAA-H-8083-31B, p. 7-7 |
The FAA handbook gives no strength, modulus or temperature figures for polyester, so none are shown. A resin data sheet from the maker carries them.
Limits — when NOT to use this
- No structural data here.
- Not a repair resin for epoxy parts. A repair keeps the resin family the part was built with.
Where to buy
AmericaDistributor coming soonOur partner for this region is on its way
EuropeDistributor coming soonOur partner for this region is on its way
OceaniaDistributor coming soonOur partner for this region is on its way
Distributors coming soon.
Sources
- FAA-H-8083-31B, AMT Handbook — Airframe, Volume 1 (2023), Chapter 7 — polyester resins (p. 7-6); epoxy processing speed (p. 7-7).
- Toray Composite Materials America, TORAYCA T700S Standard Modulus Carbon Fiber Data Sheet (Rev. 11/24/2025) — fiber and composite properties, tow sizes, resin compatibility.
Educational reference only. not approved data. Always consult the applicable SRM, AMM, or AC 43.13-1B and your certifying authority.