E-Glass/Epoxy Unidirectional (MIL-HDBK-17)

Verifiedcomposite
· E-Glass/Epoxy UD· GFRP UD

E-Glass/Epoxy unidirectional composite is a fiber-reinforced polymer consisting of aligned E-glass fibers (55% by volume) embedded in an epoxy resin matrix, manufactured via filament winding or prepreg lay-up processes and qualified to MIL-HDBK-17 military standards. This material delivers high stiffness and strength along the fiber axis while remaining lightweight, making it the workhorse composite for load-bearing structures where unidirectional reinforcement aligns with primary stress directions. Engineers select it over isotropic metals or multidirectional laminates when weight reduction, cost efficiency, and directional strength optimization are critical, particularly in applications where fibers can be oriented to match load paths.

aerospace fuselage and wingswind turbine bladespressure vessels and tanksmarine hull structuresautomotive structural reinforcementfilament-wound pipes and cylinders

Compliance & Regulations

?Conflict Free?FDA?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
Composite Layup1 ply · 0.20 mm total

Fiber Direction

+0°
Drag to rotate · Scroll to zoom · → = 0° reference
FiberE-Glass
MatrixEpoxy
ProcessFilament winding or prepreg
Vf55%

Ply Schedule

+0°E-Glass/Epoxy0.2 mm

Laminate Code

[0]T

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)
88.47
ksiL
Poisson's Ratio(ν)
0.2800
-notes
Shear Modulus(G)
551.1
ksinotes
Ultimate Tensile Strength(σUTS)
4.496
ksiT
Young's Modulus(E)
1,247.3
ksiT
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Coefficient of Thermal Expansion(α (CTE))
3.889
µin/in·°FL
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Density(ρ)
0.07225
lb/in³—
Verified Unverified Low confidence (<80%) Link to source

Regulatory Screening

Environmental

Safety & Biocompatibility

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.