Carbon fiber (T300)
Standard-modulus PAN carbon fiber; transversely isotropic (axial values listed).
Also called: Toray T300, standard modulus carbon fibre, T300 3k
| Property | Value | Source | Method | Conditions | Note |
|---|---|---|---|---|---|
| Density | 1.76 g/cm³ | Daniel & Ishai, Engineering Mechanics of Composite Materials, 2nd ed. | — | 23 °C, dry | — |
| Young's modulus E | 230 GPa | Daniel & Ishai, Engineering Mechanics of Composite Materials, 2nd ed. | — | 23 °C, dry | axial; transverse ≈ 15 GPa |
| Tensile strength | 3530 MPa | Daniel & Ishai, Engineering Mechanics of Composite Materials, 2nd ed. | — | 23 °C, dry | — |
T300 is the classic standard-modulus PAN carbon fibre from Toray — the reference fibre much of the composites literature is written around, at roughly 230 GPa modulus.
Cheaper and tougher (higher strain-to-failure) than the stiffer intermediate- and high-modulus grades, it remains the default for general industrial and aerospace laminates where ultimate stiffness isn't the priority. T300/5208 is a standard textbook prepreg system.
See where Carbon fiber fits in a real product, and what it competes with:
- Daniel & Ishai, Engineering Mechanics of Composite Materials, 2nd ed.
Typical room-temperature values for learning and preliminary design; grades vary. Always confirm against the supplier datasheet before design work. Data policy: docs/DATA-SOURCES.md in the repository.