HY-E 1338H unidirectional tape, grade 145 — AS4 12k carbon/938

Name: HY-E 1338H unidirectional tape, grade 145 — AS4 12k carbon/938
Brand: MatWorld

Verifiedcomposite

AS4 12k (Hercules) carbon fibre (12,000-filament tow) in a 938 (Fiberite) epoxy matrix, supplied as tape. Carbon/epoxy is the primary structural composite of modern aerospace: the highest stiffness-to-weight of the common systems, with well-characterised and predictable behaviour. It is used for wing and empennage skins, spars and ribs, fuselage panels and control surfaces — anywhere weight is the governing cost. The handbook characterises it from -65 °F to 200 °F, consistent with moderately elevated service. MatWorld carries 2 tensile, compressive and shear curves for this system, digitised from MIL-HDBK-17-2F Volume 2 (US Government work, public domain).

aerospace primary structureswing and empennage skinsspars, ribs and stringersweight-critical structural components

Compliance & Regulations

?ITAR?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65

Units:

si imperial

Composite Layup8 plies · 0.85 mm total

Fiber Direction

+0°

Drag to rotate · Scroll to zoom · → = 0° reference

Ply Schedule

+0°HY-E 1338H unidirectional tape, grade 1450.1067 mm

Laminate Code

[0/0/0/0/0/0/0/0]s

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

2 interactive curves for this material

Stress-strain, S-N fatigue and environmental knockdown curves are free with an account.

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Environment

Direction

Layup

Normalization

Moisture

Data Class

Property	Value	Unit	Conditions
Compressive Modulus(Ec)4 entries	18,200 range 15,700–21,000n=15, 2 batches, CV 9.13%	ksi	24°C · RTA · 1-axis · [0]:8 · norm. thk+Vf
↳	18,400 range 15,900–22,500n=15, 2 batches, CV 12.4%	ksi	24°C · RTA · 1-axis · [0]:8 · as-measured
↳	19,100 range 16,900–24,000n=13, 2 batches, CV 12.8%	ksi	93°C · ETW · 1-axis · [0]:8 · norm. thk+Vf
↳	18,400 range 16,600–21,000n=13, 2 batches, CV 9.1%	ksi	93°C · ETW · 1-axis · [0]:8 · as-measured
Compressive Strength(σc)	26.20 – 265	ksi	5 entriesClick to expand
Ultimate Shear Strength(Fsu)2 entries	13.90 range 11.90–16.00n=18, 3 batches, CV 7.63%	ksi	93°C · ETA · 12-axis · [+-45]:2s · as-measured
↳	13.00 range 10.80–13.90n=13, 3 batches, CV 6.36%	ksi	24°C · RTA · 12-axis · [+-45]:2s · as-measured
Ultimate Tensile Strength(σUTS)	6.500 – 363	ksi	8 entriesClick to expand
Young's Modulus(E)	970 – 26,900	ksi	8 entriesClick to expand

N entriesMultiple entries per property — large groups are collapsed; click a summary row to expand. Use filters above to narrow by form, heat treatment, basis, or test environment.

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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.

HY-E 1338H unidirectional tape, grade 145 — AS4 12k carbon/938

Mechanical Properties

Regulatory Screening

Environmental

Export Control

Quality & Standards