34-700 Carbon Fiber

34-700 Carbon Fiber is a high-strength synthetic fiber composed primarily of polyacrylonitrile-derived carbon, optimized for structural reinforcement in high-performance applications. This grade exhibits outstanding tensile strength exceeding 3500 MPa, combined with a high modulus of elasticity and very low density (~1.8 g/cm³), making it ideal for applications requiring a high strength-to-weight ratio. It is extensively employed in aerospace, automotive, and sports equipment industries, where lightweight construction and fatigue resistance are critical. Specific technologies include aircraft fuselage panels, automotive monocoque shells, and performance cycling components. With exceptional dimensional stability, low thermal expansion, and electrical conductivity, 34-700 Carbon Fiber is also valuable in precision instruments and energy storage systems. Its integration into metal, ceramic, and polymer matrices allows for the fabrication of composites that outperform conventional materials like steel and titanium. This fiber continues to drive material innovation by enabling lighter, stronger, and more durable components for next-generation transportation and engineering systems.

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Tolerance

Properties

Reference & Citations

each

Tolerances

Fibre

Filament Diameter		±25%
Number Of Yarns		±10%
Number Of Filaments		±10%
Tex Number		±10%
Length		+5% / -1%

Material Properties for Metals

Atomic Properties

Element	Value
Atomic number	6
Crystal structure	Hexagonal/Diamond
Electronic structure	He 2s² 2p²
Valences shown	2, 3, 4
Atomic weight( amu )	12.011
Thermal neutron absorption cross-section( Barns )	0.0034
Photo-electric work function( eV )	4.8
Natural isotope distribution( Mass No./% )	12/ 98.89
Natural isotope distribution( Mass No./% )	13/ 1.11
Atomic radius - Goldschmidt( nm )	0.077
Ionisation potential( No./eV )	6/ 490
Ionisation potential( No./eV )	4/ 64.5
Ionisation potential( No./eV )	1/ 11.26
Ionisation potential( No./eV )	3/ 47.9
Ionisation potential( No./eV )	2/ 24.38
Ionisation potential( No./eV )	5/ 392

Mechanical Properties

Element	Value
Hardness - Mohs	0.5-1
Hardness - Mohs	10
Material condition	Diamond
Material condition	Graphite
Bulk modulus( GPa )	33
Bulk modulus( GPa )	542
Tensile modulus( GPa )	4.8

Electrical Properties

Element	Value
Electrical resistivity( µOhmcm )	1375@0@0°C
Thermal emf against Pt (cold 0C - hot 100C)( mV )	0.7

Physical Properties

Element	Value
Boiling point( C )	5000
Density( gcm⁻³ )	2.25@20°C

Thermal Properties

Element	Value
Melting point( C )	3650
Specific heat( J K⁻¹ kg⁻¹ )	712@25°C
Thermal conductivity( W m⁻¹ K⁻¹ )	80-240@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	0.6-4.3@0-100°C