Aramid cord fabric is the core skeleton reinforcement material that defines the performance ceiling of high-end tires. Made from para-aramid filaments twisted into cord yarns and woven after professional dipping treatment, it is widely used in critical tire positions including the carcass, belt and cap strip. As a professional aramid cord fabric manufacturer, we deliver high-performance para-aramid cord solutions with outstanding strength-to-weight ratio, heat resistance and fatigue durability. We support custom specifications and bulk supply, serving tire applications across passenger vehicles, new energy mobility, aviation and engineering sectors.
Cord fabric is a high-strength fiber textile embedded inside tire rubber, acting as the "invisible skeleton" of a tire. While the rubber layer handles wear resistance, sealing and cushioning, the internal cord structure bears nearly all vehicle load, traction, braking force and road impact, directly determining tire strength, stability, durability and service life.
Premium cord fabric requires high tensile strength and initial modulus, good heat and fatigue resistance, excellent dimensional stability, and strong adhesion to rubber — it is the core material that sets the upper limit of tire performance.
Para-aramid cord fabric is produced from para-aramid filament yarns. The yarns are first twisted into cord yarns of required specifications, then treated with specialized dipping formulas to improve rubber adhesion, and finally woven into finished fabric. The dipping process ensures firm bonding between cords and rubber, while the inherent properties of aramid give the cord fabric its innate performance advantages.
Key technical parameters of high-performance para-aramid cord fabric:
Tensile strength: above 2800 MPa
Density: approx. 1.44 g/cm³
Decomposition temperature: approx. 500℃
Strength retention after 48h at 200℃: approx. 90%
Elongation at break: approx. 3.6%
Dry heat shrinkage: less than 0.1%
Common tire cord materials include steel, rayon, nylon 66 and polyester, each with distinct performance profiles and application scenarios:
| Material | Specific Strength | Weight Profile | Heat Resistance | Dimensional Stability | Corrosion Resistance | Primary Application |
|---|---|---|---|---|---|---|
| Aramid | Extremely high (5–6x that of steel) | Ultra-light | Excellent | Excellent | Excellent | High-end performance tires, specialty tires |
| Steel | High | Heavy | Moderate | Good | Poor (prone to rust) | Standard commercial tires, heavy-load tires |
| Nylon 66 | Moderate | Moderate | Moderate | Moderate | Good | Mid-to-entry level passenger tires |
| Polyester | Moderate | Moderate | Moderate | Good | Good | General passenger tires |
Aramid cord fabric delivers tensile strength above 2800 MPa, with the highest specific strength and specific modulus among all cord materials. It provides stronger reinforcement at lower weight, allowing material reduction and optimized tire structural design under equal strength requirements.
Para-aramid has a decomposition temperature of approximately 500℃. After 48 hours of continuous heat aging at 200℃, it retains around 90% of its original strength. This outstanding thermal aging performance enables reliable performance under high-temperature conditions from high-speed driving and heavy-duty operation.
Heat-resistant aramid cord fabric features low elongation at break (approx. 3.6%) and dry heat shrinkage below 0.1%. It offers excellent creep resistance and minimal deformation, maintaining long-term carcass structural stability, suppressing centrifugal expansion at high speeds, and ensuring precise handling and driving safety.
Aramid cord fabric exhibits excellent flex resistance, tear resistance and abrasion resistance. Unlike steel cord, it does not rust, delivering stable performance under variable loads and complex environments, effectively extending overall tire service life and reducing total lifecycle cost.
Lightweight aramid cord fabric has a density of only about 1.44 g/cm³, less than one-fifth that of steel. Its adoption significantly reduces overall tire weight, lowers rolling resistance, cuts fuel consumption and carbon emissions, and aligns with the development trend of new energy vehicles and low-carbon tires.
With its balanced and outstanding overall performance, para-aramid cord fabric has become the preferred skeleton material for various high-end tires.
Used for cap strip reinforcement, it effectively suppresses carcass expansion caused by centrifugal force at high speeds, reduces flat-spotting, and significantly improves handling stability and driving experience.
Used for belt and carcass reinforcement, it reduces tire weight while enabling efficient torque transmission, improving vehicle range and load capacity to match the power characteristics and lightweight requirements of NEVs.
Used for belt reinforcement, it delivers significant weight reduction while maintaining required strength, supports multiple tire retreads, improves tire durability and lowers total lifecycle cost for airlines.
Applied in the belt structure, it provides superior handling, cornering stability and high-speed stability, meeting extreme performance requirements on racetracks and high-performance riding conditions.
Provides a rust-free, lightweight reinforcement solution built for harsh operating conditions, suitable for complex environments such as mining and construction sites, ensuring tire reliability and operational efficiency for heavy engineering vehicles.
Used in foldable bead areas and puncture-resistant layers under the tread, balancing light weight, flexibility and protective performance to improve riding experience and tire durability.
Selection should be based on tire application scenario, performance targets and structural design. Key parameters to confirm include cord linear density, fabric density, dipping type and fabric width, to ensure compatibility with tire production processes and performance goals. Our technical team is available to provide professional support for your selection.
When sourcing aramid cord fabric, it is recommended to focus on the supplier’s raw material stability, production process maturity, product quality consistency, customization capability and bulk delivery capacity, as well as verify that product performance parameters meet industry standards and your own requirements.
As an experienced aramid cord fabric supplier, we offer comprehensive customization services and stable bulk supply capacity to meet procurement needs of customers across all scales.
Custom cord specifications and linear density
Custom weave structure and fabric density
Custom fabric width and roll length
Custom dipping formulas (adapted to different rubber systems)
Custom special performance requirements (e.g. ultra-high strength, ultra-low shrinkage)
We operate large-scale aramid fiber and cord fabric production lines with a high rate of premium-grade products and industry-advanced manufacturing technology. We ensure stable delivery and consistent quality for large-volume orders, support wholesale aramid cord fabric and bulk purchase. Welcome to inquire about aramid cord fabric price and lead times.
If you need custom aramid cord fabric, bulk procurement or OEM cooperation, please contact us with your detailed specification requirements and volume plan. We will provide professional selection advice and an accurate quotation to support the performance upgrade of your tire products.
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E-mail: chris@sftrubber.com
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