K number refers to the number of monofilaments in the carbon fiber bundle, and the tensile strength we usually say refers to the tensile strength of monofilaments. This is related to the types of carbon fibers, such as T200, T300 and T700. The higher the model, the higher the tensile strength. The tensile strength of T300 should reach 3.5 GPA and T700 should reach 4.9Gpa, which are internationally accepted indicators. T300 can include 1K, 3K, 6k, 12k and 24k. At present, T700 only has 12K carbon wires. If the carbon wires are of the same model, the total number of 12K is more, and of course the tensile strength is more than 3K. Same as k, T700 >:T300 & gt；; T200。

I hope I can help you.