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. 
  • T400H - Enhanced tensile strength and modulus over T300 and T300J, specifically designed for aerospace applications. Available in 3K and 6K tow sizes. 
  • 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. 
  • 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.
Fiber Tensile Modulus (msi) Tensile Strength (ksi) Datasheet
T300
33.4 512  View Datasheet
T400H
36.3 640 View Datasheet
T700S
33.4 711 View Datasheet
T700G
34.8 711 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. 
  • 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. 
  • 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. 
  • T1100G - Next generation intermediate modulus fiber with excellent processability in traditional manufacturing methods (weaving, PrePreg, etc).  Available only in a 12K tow size. 
  • T1100S - Next generation intermediate modulus fiber with excellent processability in traditional manufacturing methods (filament winding).  Available only in a 12K tow size.
 Fiber
 Tensile Modulus (msi)
 Tensile Strength (ksi)
Datasheet  
T800H
 42.7
796
T800S
 42.7
853
T1000G
 43.0
924 
T1100G
 47.0
1017
T1100S
 47.0
1017

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
49.8 654 (6K)     683 (12K)  View Datasheet
M40J
54.7  640 View Datasheet
M46J
63.3 609 (6K)     583 (12K) View Datasheet
M50J
69.0 597  View Datasheet
M55J
78.2 583  View Datasheet
M60J
85.3 554 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. 
  • 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. 
  • 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. 
  • T1100G - Next generation intermediate modulus fiber with excellent processability in traditional manufacturing methods (weaving, PrePreg, etc).  Available only in a 12K tow size. 
  • T1100S - Next generation intermediate modulus fiber with excellent processability in traditional manufacturing methods (filament winding).  Available only in a 12K tow size.
 Fiber
Tensile Modulus (msi)
Tensile Strength (ksi) 
Datasheet 
T700S
33.4
711
T800S
42.7
853 
T1000G
43.0
924
T1100G
47.0
1017
T1100S
47.0
1017