DIALEAD is a pitch-based carbon fiber supported by many proprietary technologies as a result of coal chemistry by Mitsubishi Chemical over many years. The product is widely applied to fields such as aerospace, industry, and sports.

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Characteristics

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High Purity

DIALEAD has a high carbon content ratio, maintaining chemical stability of composite materials.

It has a structure in which graphite plates are highly oriented in the vertical direction of fiber.

This results in such features as lightweight, high stiffness, high thermal conductivity, and ultra low thermal expansion coefficient.

High Modulus

A full range is available to meet required strength and modulus.

Plotted data of modulus of elasticity in tension and strength
*Based on a survey by Mitsubishi Chemical

High thermal conductivity

Has performance equivalent to or better than copper, aluminum, and iron.

Plotted data of thermal conductivity and electrical resistance
*Based on a survey by Mitsubishi Chemical

Applications

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Aerospace

The coefficient of thermal expansion can be controlled by optimizing carbon fiber mixing, and can be made to zero, depending on design.

In addition to low thermal expansion, lightweight, and high stiffness, heat sink and other thermal controls can be realized, utilizing the product's property of thermal conductivity only in the orientation of the fiber.

  • Artificial satellite

©Akihiro Ikeshita

  • Structural materials for the antenna of large radio telescope

Courtesy of Vertex GmbH.

Construction and civil engineering

Our products are used for antiseismic reinforcement and repair of structures, taking advantage of their lightweight, high stiffness and corrosion resistance.

  • Bridge pier reinforcement
  • Deck reinforcement

Automobiles / vehicles

The lightweight, high rigidity, and corrosion resistance properties are utilized to repair buildings and create earthquake reinforcements.

  • Propeller shaft
    Thanks to the weight reduction and high stiffness characterizing DIALEAD, the critical number of revolutions can be increased.
    In addition, joints can be eliminated or their diameter can be reduced.
  • C/C materials (Carbon / carbon fiber composite materials)
    Excellent strength and wear resistance under high temperatures is the reason for the materials application in a wide range of braking materials from racing cars to airplanes.

Courtesy of Moriwaki Engineering Co., Ltd.

Industrial equipment

  • High performance carbon fiber composite roller for industrial use
    With little run-out, our product enables high precision, wide film production, and printing.
  • Beams for transfer machines
    High stiffness and weight reduction achieve vibration damping in a short period of time, improving tact time and productivity.

Courtesy of Daimler Chrysler Aerospace, Dornier GmbH, and Mueller Weingarten AG.

  • Pick for transferring semiconductor wafer
  • Robot hand for liquid crystal glass
    In addition to lightweight and high stiffness, the excellent vibration damping property realizes the improvement of productivity in the field of mechatronics.

Courtesy of Yaskawa Electric Corporation

Sports, etc.

  • Golf club shaft

Lineup / specifications

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Continuous fiber

Suitable for various fabrics, prepreg, and filament winding.

  • Standard grade
    For the modulus of elasticity in tension and tensile strength of each grade, please refer to the relevant Physical Properties.

Properties

Continuous Fiber

[Standard grade]

Continuous fiber Grade Tensile modulus Tensile strength Elongation Density Yield Thermal conductivity Volume resistivity
[Unit] [GPa] [MPa] [%] [g/cm3] [g/1000m] W/m,K [µΩm]
2K/6KType K1352U 620 3,600 0.6 2.12 270 140 6 to 7
K1392U 760 3,700 0.5 2.15 270 210 5
K13C2U 900 3,800 0.4 2.20 270 620 -
K13C6U 900 3,600 0.4 2.18 760 580 2 to 3
K13D2U 935 3,700 0.4 2.20 365 800 -
12K/16KType K13312 420 3,200 0.7 2.06 1,560 - -
K63712 640 2,600 0.4 2.12 2,000 140 6 to 7
K13916 760 3,200 0.4 2.15 2,200 200 5 to 6
K63A12 790 2,600 0.3 2.15 1,950 220 4 to 5
  • *This information can be used for material selection only.

[Laminate properties] (2K)

Style: Uni-directional [0] t
Resin: Mitsubishi Chemical 934 (350°F cure epoxy)

  K1352U K1392U K13C2U K13D2U
Longitudinal Tensile Strength [MPa] 2,000 2,100 2,200 1,800
Modulus [GPa] 380 460 560 560
Compressive Strength [MPa] 450 400 380 340
Modulus [GPa] 250 420 560 560
ILSS [MPa] 75 70 50 40
CTE (Temp. 50 to 125°C) [x10-6/K] -1.1 -1.2 -1.2 -1.2
Tranverse Tensile Strength [MPa] 40 35 30 25
Modulus [GPa] 6.2 6.0 5.4 5.1

[Laminate properties] (12K)

Style: Uni-directional [0] t
Resin: Mitsubishi Chemical 934 (350°F cure epoxy)

  K63712 K63A12
Longitudinal Tensile Strength [MPa] 1,500 1,500
Modulus [GPa] 370 470
Compressive Strength [MPa] 440 380
Modulus [GPa] 330 470
ILSS [MPa] 75 70
CTE(Temp. 50 to 125°C) [x10-6/K] -1.1 -1.2
Tranverse Tensile Strength [MPa] 35 26
Modulus [GPa] 5.4 5.2
  • *Data are average results of experiments made on standard procedures and subject to normal manufacturing variation.
    Tensile and compressive data normalized by 60% fiber volume.

Chopped fiber

Widely applied to thermoplastic resin, etc. to improve electric and thermal conductivity and mechanical strength.

  • Subject plastics
    ABS, PP, PC, POM, mPPO, PBT, PA, LCP, PPS, PES, PEEK, PEI, etc.
    For the modulus of elasticity in tension and tensile strength of each grade, please refer to the relevant Physical Properties.

Properties

Chopped Fiber

[Fiber properties]

  K223SE K223Y1 K223HE K6371T
Bulk properties Length [mm] 6 6 6 6
Bulk density [g/l] >430 >330 >400 >400
Shape   Round Round Round Flat
Sizing amount [%] 3 to 6 2 to 4 0 1 to 3
Filament properties Filament diameter [µm] 11 13 11 11
Thermal conductivity W/m,K 20 <5 550 140
Tensile modulus [GPa] 185 50 900 640
Tensile strength [MPa] 2,350 1,000 3,800 2,600
Elongation [%] 1.1 1.8 0.3 0.4
Density [g/cm3] 2.0 1.5 2.2 2.1
  • *This information can be used for material selection only.

Milled fiber

When mechanical strength is very different from that of carbon fiber or when carbon fiber is added to a matrix with low viscosity at the time of kneading, composite materials with excellent dispersibility can be obtained by making fiber short beforehand.

  • Standard grade
    K6371M, K223HM
    For the modulus of elasticity in tension and tensile strength of each grade, please refer to the relevant Physical Properties.

Properties

Milled Fiber

[Standard grade]

Grade Tensile modulus Tensile strength Density Thermo conductivity Volume resistance Convergence agent Average length of fiber
[Unit] [GPa] [MPa] [g/cm3] W/m,K [µΩm] [%] Average
K6371M 640 2,600 2.1 140 6 to 7 1 to 3 50µm
K223HM 900 3,800 2.2 550 - 0 50µm,200µm
  • *This information can be used for material selection only.
    K6371M and K223HM are milled grades ofchopped fiberK6371T and K223HE, respectively.

Fabric

We offer various fabrics, UD cloths, and prepregs.

  • Standard grade
    F637400, FT37Y960, FT3C224
    For the modulus of elasticity in tension and tensile strength of each grade, please refer to the relevant Physical Properties.

Properties

Fabric

[Examples of fabric applications]

Grade Structure FAW[g/m2] Uni directional
F637400 UD 400 K63712
FT37Y960 Twill weaved 960 K63712
FT3C224 Twill weaved 240 K13C2U

For prepreg, click here.[Open in a new window]


If you would like to request any of the following materials, please write the name(s) of the document(s) on the inquiry form.

  • Dialead Pitch-based Carbon Fiber (pamphlet)

Inquiries Concerning Products


Carbon Fiber and Composite Materials Dept.
  • TEL:[+81]3-6748-7357/FAX [+81]3-3286-1341

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