AS4 Carbon Fiber (Hexcel)
Verifiedcomposite· AS4· Hexcel AS4· AS4 12K
AS4 is a continuous carbon fiber produced by Hexcel, widely recognized as an industry-standard intermediate-modulus fiber for polymer matrix composites. It is the workhorse reinforcement in aerospace structures, wind turbine blades, and high-performance sporting goods, chosen for its balance of stiffness, strength, and cost-effectiveness compared to higher-modulus alternatives like IM7 or HS40. Engineers select AS4 when moderate-to-high structural performance is required without the weight or cost penalty of premium fibers, making it the most common choice for primary aircraft structures and demanding composite applications.
aircraft fuselage and wingswind turbine bladesautomotive body panelssporting equipment (bicycles, golf clubs)pressure vessels and tank wrappingmarine structural components
Compliance & Regulations
?ITAR?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Elongation at Break(εf) | — | - | — | — | |
Poisson's Ratio(ν) | — | - | — | — | |
Ultimate Tensile Strength(σUTS) | — | ksi | — | — | |
Young's Modulus(E) | — | ksi | — | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Coefficient of Thermal Expansion(α (CTE)) | — | µin/in·°F | — | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | — | lb/in³ | — | — |
Verified Unverified Low confidence (<80%) Link to source
Regulatory Screening
Environmental
Export Control
Quality & Standards
RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.