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What do T300, T700, and T800 mean in carbon fiber materials?
- Oct-15-2025
- (7) Views
T300: This is a standard modulus carbon fiber and was widely used in the early days.
T700: This is a high-strength, medium-modulus carbon fiber, offering a good balance between strength and cost. It is currently the most widely used type.
T800: This is a higher-strength carbon fiber with excellent performance, but generally comes at a higher cost.
Generally speaking, the larger the number, the higher the tensile strength of the carbon fiber.
| Features/Parameters | T300 | T700 | T800 | T1000 |
| Tensile Strength | Lower (e.g. ~3.5 GPa) | Higher (e.g. ~4.9 GPa) | Higher (e.g. ~5.5 GPa) | Very high (e.g. > 6.4 GPa) / high strength but also high modulus |
| Tensile modulus | Lower (e.g. ~230 GPa) | Higher (e.g. ~230 GPa) | Higher (e.g. ~290 GPa) | Very high (e.g. > 300 GPa) / modulus even higher |
| Elongation at break | Relatively high (e.g. ~1.5%) | Relatively high (e.g. ~1.7%) | Relatively low (e.g. ~1.8%) | Lower (e.g. < 1.7%) / Likely lower |
| Cost | Relatively low | Medium | Higher | Very high |
| Density | Relatively stable, with little difference between different brands | Relatively stable | Relatively stable | Relatively stable |
| Application | Sporting goods, general industrial parts, etc. | Aerospace, automobiles, high-end sporting goods, etc. | Aerospace, racing, etc. | Aerospace, satellites, precision instruments, etc. |
