Types of Carbon Fiber

TORAYCA® carbon fibers are designated by two main types:

  • T series high strength fibers with both standard and intermediate modulus values
  • M series intermediate and high modulus fibers, including higher strength MJ series fibers.
  • A summary data sheet of the entire TORAYCA® carbon fiber product line is available here.

See below for additional information, including product data sheets, to assist you in selecting the correct TORAYCA® carbon fiber for your specific application. 

Note that all values listed on these data sheets are typical lot average properties and do not guarantee any specific values. Data sheet values are to be used for material selection purposes only and not for design. If your application requires guaranteed values, please contact a member of our sales and technical team. They will assist you in establishing a material specification for your application.

Standard Modulus Carbon Fibers

Standard modulus carbon fibers typically exhibit a fiber modulus of 33-34 msi, or slightly higher. These are the most cost-effective fibers as measured by tensile strength or modulus per unit cost. Toray's T300 standard modulus carbon fibers are a recognized industry standard, having been in production for over 30 years. T700S is the highest tensile strength, standard modulus carbon fiber available in the industry. Standard modulus carbon fibers are available in tow sizes from 1K to 24K.
  • T300 - Baseline carbon fiber used in aerospace applications with over 20 year service history. Has 30 year production history and is known for balanced composite properties, high quality and consistency, reliability and availability of supply. Available in 1K, 3K, 6K and 12K tow sizes. View Datasheet.
  • T400H - Enhanced tensile strength and modulus over T300 and T300J, specifically designed for aerospace applications. Available in 3K and 6K tow sizes. View Datasheet.
  • T700S - The highest strength, standard modulus fiber available, with outstanding processing characteristics for filament winding, weaving and prepregging. This never-twisted fiber is used in a variety of industrial and recreational applications, including pressure vessels such as natural gas vehicle (NGV) storage tanks and SCBA breathing tanks. Available in 6K, 12K, and 24K tow sizes. View Datasheet.
  • T700G - Enhanced tensile modulus and adhesion properties over T700S. Applications of this never-twisted fiber include aircraft and high performance sporting goods where demanding conditions require superior composite properties. Available in 12K tow sizes. View Datasheet.

Intermediate Modulus

Intermediate modulus (IM) carbon fibers exhibit a tensile modulus of 42 msi. Originally developed for aerospace applications, IM fibers now find use in recreational and industrial applications as well. Toray offers a broad range of IM fibers with a mix of price and performance characteristics to meet the needs in a broad range of industries. Toray's IM fibers are available in 6K, 12K, 18K and 24K tow sizes.
  • T800H - An intermediate modulus, high tensile strength fiber, with high level and balance composite properties. Designed and developed to meet the weight saving demands of aircraft applications. Is used in primary structure of commercial aircraft, including vertical fin and horizontal stabilizers. Available in 6K and 12K tow sizes. View Datasheet.
  • T800S - A very cost-effective, high tensile strength alternative to T800H. This never-twisted fiber has especially high tensile properties. Available only in a 24K tow size. View Datasheet.
  • T1000G - The world's highest tensile strength carbon fiber. Suitable for lightweight, tensile strength critical applications such as pressure vessels for aerospace vehicles, and satellites, as well as hydrogen storage tanks for fuel cell vehicles. Available only in a 12K tow size. View Datasheet.

High Modulus Carbon Fibers

Toray's MJ and M-series high modulus carbon fibers represent the highest modulus PAN-based carbon fibers available. PAN-based high modulus fibers are superior to pitch-based fibers due to tensile and compressive strengths that are often times more than twice that of a corresponding pitch-based fiber. The MJ series fibers offer enhanced tensile strength and elongation over M series fibers. They are typically used in stiffness and coefficient of thermal expansion (CTE)-critical applications such as spacecraft, premium sporting goods and industrial rollers.
       
Fiber Tensile Modulus (msi) Tensile Strength (ksi) Datasheet
M35J
50  683  View Datasheet
M40J
55  640  View Datasheet
M46J
63  611  View Datasheet
M50J
69  597  View Datasheet
M55J
78  583  View Datasheet
M60J
85  569  View Datasheet

High Strength Carbon Fibers

Toray offers the highest tensile strength and highest strain-to-failure carbon fibers available in the world. With the exception of T1000G, each of the fibers listed below is produced as a never-twisted fiber.
  • T700S - The highest strength, standard modulus fiber available, with outstanding processing characteristics for filament winding, weaving and prepregging. This never-twisted fiber is used in a variety of industrial and recreational applications, including pressure vessels such as natural gas vehicle (NGV) storage tanks and SCBA breathing tanks. Available in 6K, 12K, and 24K tow sizes. View Datasheet.
  • T800S  - A very cost-effective, high tensile strength alternative to T800H. This never-twisted fiber has especially high tensile properties. Available only in a 24K tow size. View Datasheet.
  • T1000G - The world's highest tensile strength carbon fiber. Suitable for lightweight, tensile strength critical applications such as pressure vessels for aerospace vehicles, and satellites, as well as hydrogen storage tanks for fuel cell vehicles. Available only in a 12K tow size. View Datasheet.