Differences between T700 and T800
T700 and T800 are two grades of carbon fiber. Their numbers represent the approximate tensile strength in kgf/mm2 or ksi. T700 is a grade of carbon fiber with a tensile strength of 4900MPa and a specific strength of 3060MPa, which is higher than T300 but lower than T800. The carbon mass fraction in T700 grade carbon fiber is 95.58%, which is a high-end performance grade. T800 is another grade, which is usually measured by tensile strength index. Its tensile strength should reach 5.49Gpa. It is the highest strength grade carbon fiber that can be industrially mass-produced abroad at present, especially in aerospace and other fields. It plays an irreplaceable role.
| Carbon fiber | T700 | Strength level: It has a high tensile strength, with a tensile strength of 4900MPa. Carbon content: The carbon mass fraction in carbon fiber is 95.58%, which belongs to the varieties with higher performance. Application areas: Due to its high strength and performance, T700 carbon fiber has been applied in multiple fields, but may not be as widely used in areas with extremely high strength requirements as T800. |
| T800 | Strength level: It has extremely high tensile strength, and the tensile strength needs to reach 5.49Gpa (5490MPa), which is currently the highest strength level of carbon fiber that can be industrialized and mass-produced abroad. Application field: Due to the high strength performance of T800 carbon fiber, it plays an irreplaceable role in aerospace and other fields, and is also suitable for other fields that require extremely high strength. |
The strength level of carbon fiber is divided according to its tensile strength. T700 and T800 are two typical representatives. The tensile strength of T700 is 4900MPa and the specific strength is 3060MPa, which is higher than T300 but lower than T800. The carbon mass fraction in T700 grade carbon fiber is 95.58%. T800 is the highest strength grade of carbon fiber, and its tensile strength should reach 5.49Gpa. It is the highest strength grade of carbon fiber that can be industrially mass-produced abroad. In the fields of aerospace, T800 plays an important role.
What’s carbon fiber?
Carbon fiber:
Carbon fiber is a unique fiber material that has attracted attention for its excellent physical and chemical properties. This material is composed of carbon atoms tightly bonded, forming an extremely strong and lightweight structure. Its diameter is about 5-7 microns, which is about one tenth the thickness of human hair, making carbon fiber have a very high specific surface area and unique mechanical properties.
Manufacturing process:
The manufacturing process of carbon fiber is complex and precise. Firstly, acrylonitrile is used as the raw material, which is transformed into precursors of carbon fiber through a series of chemical reactions and physical treatments. Then, these precursors are carbonized in a high-temperature environment, gradually removing impurities by controlling temperature and time, and increasing the carbon atom content to over 90%. During this process, the structure and properties of carbon fiber are optimized, forming its unique characteristics of “light”, “strong”, and “hard”.
Application field:
Aerospace field:
Carbon fiber is particularly widely used in the aerospace field. Due to its lightweight and high-strength characteristics, carbon fiber is used to manufacture key parts such as aircraft fuselage, wings, and engine components. This not only reduces the overall weight of the aircraft, improves fuel efficiency, but also increases the comfort and safety of the cabin. In addition, carbon fiber also has good corrosion resistance and rust resistance, which allows the aircraft to maintain stable performance in harsh environments.
Automotive industry:
In the automotive industry, the application of carbon fiber is also increasing. For example, carbon fiber can be used to manufacture components such as chassis, body, and air storage tanks of cars. These components are not only lightweight, but also have high strength and stiffness, which can improve the safety and handling of cars. In addition, carbon fiber can also be used to manufacture key components such as battery modules and charging facilities for electric vehicles, which helps promote the development of the electric vehicle industry.
Sports equipment:
Carbon fiber is also widely used in the field of sports equipment. For example, in sports equipment such as fishing rods, golf clubs, bicycle frames, and tennis rackets, carbon fiber is widely used. These equipment utilize the lightweight and high-strength properties of carbon fiber to improve the athletic level of athletes. In addition, carbon fiber also has good durability and impact resistance, allowing these equipment to maintain stable performance in long-term use.
Summary:
Carbon fiber, as a material with unique physical and chemical properties, has been widely used in fields such as aerospace, automotive industry, and sports goods. With the continuous progress of technology and process optimization, the performance and application areas of carbon fiber will continue to expand and deepen.
Post time: Jun-19-2024