AS4/3502 Plain Weave Fabric (MIL-HDBK-17)

Verifiedcomposite
· AS4/3502 PW· 3502 Fabric

AS4/3502 is a carbon fiber reinforced epoxy composite in plain weave fabric form, combining Hexcel's AS4 carbon fiber (3K tow) with 3502 epoxy matrix, cured via autoclave prepreg processing. This material is a workhorse in aerospace and defense, selected for primary and secondary structures where balanced in-plane properties, damage tolerance, and manufacturing repeatability are required. The plain weave architecture (versus unidirectional or twill) provides good transverse strength and impact resistance with acceptable longitudinal performance, making it ideal when loads aren't purely directional or when lay-up flexibility and ease of handling outweigh ultimate performance density.

Aircraft wings and fuselageHelicopter rotor bladesMilitary aerospace structuresWind turbine bladesAutomotive chassis reinforcementPressure vessels and tanks

Compliance & Regulations

?ITAR?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
Composite Layup2 plies · 0.44 mm total

Fiber Direction

+0°
Drag to rotate · Scroll to zoom · → = 0° reference
FiberHexcel AS4 Carbon (3K)
MatrixHexcel 3502 Epoxy
ProcessAutoclave prepreg (350°F cure)
Cure177°C / 120 min / 0.59 MPa
Vf56%

Ply Schedule

+0°AS4/3502 Plain Weave0.22 mm
+0°AS4/3502 Plain Weave0.22 mm

Laminate Code

[0/0]s

Fiber angles relative to the 0° reference direction (red arrow in 3D view). 0° = longitudinal, 90° = transverse, ±45° = shear paths.

Property OverviewNormalized to typical max values
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Orientation
PropertyValueUnitConditionsSource
Compressive Strength(σc)
565.0
MPaL
Poisson's Ratio(ν)
0.04000
-notes
Shear Modulus(G)
5.090
GPanotes
Ultimate Tensile Strength(σUTS)
634.0
MPaL
Young's Modulus(E)
64.80
GPaT
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Density(ρ)
1.530
kg/m³—
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.