Carbon Fiber - 6K

Carbon Fiber - 1K

Carbon Fiber - 3K

Carbon Fiber 6K Tow Overview

6K carbon fiber tow (6,000 monofilaments per tow) is a medium-count grade between 3K and 12K, providing thicker reinforcement and better drapability for medium-to-heavy structural parts. 6K is widely used in prepreg tapes, woven fabrics for marine and wind applications, and pultruded profiles.

6K Carbon Fiber Specifications

Parameter	Value
Filament Count	6,000 (6K)
Linear Density	396 ± 12 mg/m
Tensile Strength	≥ 4,000 MPa
Tensile Modulus	≥ 230 GPa
Density	1.77 ± 0.03 g/cm³
Typical Fabric Weight	180–300 g/m²
Sizing	Epoxy-compatible, 1.0–1.6%

Applications

Prepreg tape and unidirectional fabric for structural reinforcement
Marine hulls, decks, and high-performance boat structures
Wind turbine blade components and spar reinforcement
Pultruded profiles, beams, and structural rods
Sporting goods and protective equipment

GX400-6K Carbon Fiber Tow — Wet-Spun | JiLin Tangu

GX400-6K wet-spun PAN-based carbon fiber tow — general-purpose wet-spun grade

Tensile strength 4,200–4,500 MPa · Modulus ≥235 GPa

Low density 1.77±0.03 g/cm³ · soft handle & excellent resin wettability

For prepreg, vacuum infusion (VARTM), and composite reinforcement

Carbon fiber is a continuous filament with excellent mechanical properties, low density, heat and corrosion resistance, fatigue resistance, a small thermal expansion coefficient, and good electrical and thermal conductivity — properties that translate directly into lighter, stronger, and more durable composite parts.

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