Carbon Fiber - 25K

Carbon Fiber - 1K

Carbon Fiber - 3K

Carbon Fiber 25K Tow Overview

25K carbon fiber tow (25,000 monofilaments per tow) is a heavy-tow grade equivalent to 24K for large structural applications. 25K delivers the highest fiber volume per ply and is widely used in wind turbine blades, large marine structures, industrial pultrusion, and cost-driven high-volume composite parts.

25K Carbon Fiber Specifications

Parameter	Value
Filament Count	25,000 (25K)
Linear Density	1650 ± 50 mg/m
Tensile Strength	≥ 4,000 MPa
Tensile Modulus	≥ 230 GPa
Density	1.77 ± 0.03 g/cm³
Typical Fabric Weight	400–800 g/m²
Sizing	Epoxy-compatible, 1.0–1.6%

Applications

Wind turbine blade primary structural reinforcement
Large marine structures: ship hulls, offshore components
Industrial pultruded profiles and large composite beams
Bridge reinforcement and infrastructure
Cost-effective heavy structural composites

GX400-25K Carbon Fiber Tow — Wet-Spun | JiLin Tangu

GX400-25K wet-spun PAN-based carbon fiber tow — general-purpose wet-spun grade

Tensile strength 4,200–4,550 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.

GX500-25K Carbon Fiber Tow — High-Strength Wet-Spun | JiLin Tangu

GX500-25K wet-spun PAN-based carbon fiber tow — high-strength wet-spun grade

Tensile strength 4,550–4,900 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

As a continuous PAN-based reinforcement, GX500 carbon fiber offers low density, outstanding heat and corrosion resistance, superior fatigue endurance, minimal thermal expansion, and excellent electrical/thermal conductivity — combined here with a higher tensile strength grade for demanding structural applications.

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