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

Verifiedcomposite
· E-Glass/Epoxy Fabric· 7781 Fabric/Epoxy

E-Glass/Epoxy is a lightweight fiber-reinforced polymer composite combining E-glass fibers in an 8-harness satin weave fabric with an epoxy resin matrix, typically produced via prepreg or wet layup processing per MIL-HDBK-17 military specifications. This material is widely used in aerospace, marine, and defense applications where balanced stiffness, strength, and cost-effectiveness are required—including aircraft interior components, structural panels, and composite casings. Engineers select E-Glass/Epoxy over aramid or carbon alternatives when budget and environmental durability are priorities, or when the lower density compared to traditional metals provides sufficient performance margins for secondary or semi-structural roles.

aerospace interior panelsmarine hull and deck structuresmilitary casings and housingsautomotive body panelswind turbine blade shellspressure vessels and tanks

Compliance & Regulations

?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
Composite Layup2 plies · 0.50 mm total

Fiber Direction

+0°
Drag to rotate · Scroll to zoom · → = 0° reference
FiberE-Glass (7781 8-harness satin)
MatrixEpoxy
ProcessPrepreg or wet layup
Vf50%

Ply Schedule

+0°E-Glass 7781 Fabric0.25 mm
+0°E-Glass 7781 Fabric0.25 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
PropertyValueUnitConditionsSource
Compressive Strength(σc)
310.0
MPaL
Shear Modulus(G)
4.100
GPanotes
Ultimate Tensile Strength(σUTS)
379.0
MPaL
Young's Modulus(E)
24.50
GPaL
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Density(ρ)
1.900
kg/m³—
Verified Unverified Low confidence (<80%) Link to source

Regulatory Screening

Environmental

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.