T300/5208 Unidirectional Tape (MIL-HDBK-17)

Verifiedcomposite
· T300/5208· NARMCO 5208

T300/5208 is a carbon fiber–epoxy prepreg composite consisting of Toray T300 carbon fibers in a Narmco 5208 epoxy matrix, cured via autoclave at 177°C. This unidirectional tape is a legacy aerospace material specified in MIL-HDBK-17, widely used in primary and secondary aircraft structures where a balance of stiffness, strength, and proven damage tolerance is required. Engineers select it for cost-effective, high-performance applications where established processing procedures, extensive property data, and certification support are critical—particularly in military aircraft, helicopter components, and commercial aerospace where damage tolerance and inspectability are design drivers.

Military aircraft structuresHelicopter rotor bladesCommercial aerospace fuselageFlight control surfacesPressure vessels and tanksHigh-stiffness sporting equipment

Compliance & Regulations

?ITAR?EAR?Conflict Free?FDA?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
Composite Layup1 ply · 0.13 mm total

Fiber Direction

+0°
Drag to rotate · Scroll to zoom · → = 0° reference
FiberToray T300 Carbon
MatrixNarmco 5208 Epoxy
ProcessAutoclave prepreg (350°F cure)
Cure177°C / 120 min / 0.59 MPa
Vf62%

Ply Schedule

+0°T300/52080.127 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)
180
ksiL
Poisson's Ratio(ν)
0.3000
-notes
Shear Modulus(G)
942.7
ksinotes
Ultimate Tensile Strength(σUTS)
6.237
ksiT
Young's Modulus(E)
20,015.2
ksiL
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Density(ρ)
0.05600
lb/in³—
Verified Unverified Low confidence (<80%) Link to source

Regulatory Screening

Environmental

Export Control

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.