Tenax® HTA Carbon Fiber

Tenax HTA Carbon Fiber is a high-strength polyacrylonitrile (PAN)-based fiber known for its excellent mechanical durability, surface chemistry, and compatibility with polymer composites. It offers a strand tenacity of over 430 kg/mm² and a modulus of elasticity exceeding 28 ton/mm², with a low density around 1.75 g/cm³—making it ideal for lightweight yet structurally demanding applications. Commonly used in aerospace, automotive, and advanced sports equipment, Tenax HTA supports composite manufacturing with epoxy, polyester, or thermoplastic matrices. Specific applications include aircraft structural reinforcements, performance bicycle frames, and precision robotic arms. The fiber’s surface chemistry, enhanced through controlled oxidation, improves wettability with polar matrices and supports superior interfacial bonding, essential for load transfer and fatigue resistance in structural composites. As a high-performance material in demanding environments, Tenax HTA drives innovation by enabling composites that surpass traditional metals in strength-to-weight ratios, stiffness, and thermal stability.

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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