In-depth Analysis of Key Performance Indicators for Carbon Fiber Composites: Brand, Type, and Data Comparison

(1) Tensile Strength
Carbon fiber tensile strength usually ranges from 3.5 GPa to 7.0 GPa, which is much higher than steel (approximately 0.4-2.5 GPa) and aluminum alloys (approximately 0.2-0.6 GPa). For example, Toray's T300 series carbon fiber has a tensile strength of 4.9 GPa, while Mitsubishi Chemical Corporation's M40 series carbon fiber has a tensile strength of 4.4 GPa.

(2) Modulus
Carbon fiber modulus typically ranges from 220 GPa to 320 GPa. For example, Toray's T700 series carbon fiber has a modulus of 230 GPa, while Mitsubishi Chemical Corporation's M55J series carbon fiber has a modulus of 294 GPa. These values indicate that carbon fibers are less likely to deform under stress.

(3) Elongation
Carbon fiber elongation is about 1.5% to 2.8%. Toray's T700 series carbon fiber has an elongation of 2.1%, while Mitsubishi Chemical Corporation's M40 series carbon fiber has an elongation of 1.5%.

(4) Thermal Conductivity
Carbon fiber thermal conductivity ranges from 10 W/m·K to 50 W/m·K. For example, Toray's T300 series carbon fiber has a thermal conductivity of 12 W/m·K, while Mitsubishi Chemical Corporation's M40 series carbon fiber has a thermal conductivity of 24 W/m·K.

(5) Electrical Conductivity
Carbon fiber electrical conductivity is about 10^4 S/m, much higher than general insulating materials. For example, Toray's T300 series carbon fiber has an electrical conductivity of 15,000 S/m, while Mitsubishi Chemical Corporation's M40 series carbon fiber has an electrical conductivity of 12,000 S/m.


Through the above data analysis, we can see the differences in various performance indicators between different types and brands of carbon fibers. These performance indicators have different importance in different application scenarios and need to be selected according to actual needs. It is important to note that the above data is for reference only, and the actual performance of carbon fibers may vary due to factors such as production processes, fiber types, and usage scenarios. Nevertheless, these data are sufficient to demonstrate the superior performance of carbon fibers in many aspects.