What do T700 and T800 mean in carbon fiber?

1 Answers
DelJuliet
07/29/25 4:53pm
T series carbon fiber's last three or four digits represent the approximate tensile strength, with units in kgf/mm2 or ksi. Below is a detailed introduction to T700 and T800: 1. T700: T700 is a grade of carbon fiber. T700 carbon fiber has a tensile strength of 4900MPa and a specific strength of 3060MPa, which is significantly higher than the commonly used T300 but lower than T800. Additionally, T700-grade carbon fiber has a carbon mass fraction of 95.58%, making it a relatively high-performance material. 2. T800: T800 is another grade of carbon fiber, typically measured by its tensile strength. T800 has a tensile strength of 5.49Gpa and is currently the highest-strength carbon fiber that can be industrially mass-produced abroad. It plays an irreplaceable role in fields such as aerospace.
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