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)
M35J
50
683
M40
57
398
M40J
55
640
M46J
63
611
M50J
69
597
M55J
78
583
M60J
85
569


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