HITEX 33 6k/E7K8 unidirectional tape, grade 145

Verifiedcomposite

HITEX 33 (Hitco) carbon fibre (6,000-filament tow) in an E7K8 (U.S. Polymeric) 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.

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

Compliance & Regulations

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

Units:

si imperial

Composite Layup10 plies · 1.45 mm total

Fiber Direction

+0°

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

Ply Schedule

+0°HITEX 33 6k/E7K8 unidirectional tape, grade 1450.1448 mm

Laminate Code

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

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

Property OverviewNormalized to typical max values

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Environment

Direction

Layup

Normalization

Moisture

Property	Value	Unit	Conditions
Compressive Modulus(Ec)	103.4 – 129.6	GPa	8 entriesClick to expand
Compressive Strength(σc)	0.7446 – 1.751	GPa	8 entriesClick to expand
Elongation at Break(εf)4 entries	1.610 range 1.550–1.700	-	-54°C · CTA · 1-axis · [0]:10 · as-measured · rec #405
↳	1.590 range 1.520–1.710	-	24°C · RTA · 1-axis · [0]:10 · as-measured · rec #401
↳	1.260 range 1.200–1.340	-	24°C · RTA · 1-axis · [0]:10 · as-measured · rec #421
↳	1.360 range 1.360–1.370	-	-54°C · CTA · 1-axis · [0]:10 · as-measured · rec #425
Poisson's Ratio(ν)3 entries	0.3100 n=5, 1 batches	-	24°C · RTA · 12-axis · [0]:10 · as-measured
↳	0.3100 n=5, 1 batches	-	24°C · RTW · 12-axis · [0]:10 · as-measured
↳	0.3000 n=5, 1 batches	-	82°C · ETW · 12-axis · [0]:10 · as-measured
Ultimate Shear Strength(Fsu)4 entries	103.4 range 93.08–108.9n=20, 1 batches, CV 3.52%	MPa	24°C · RTA · 12-axis · [(+-45):2/45]:s · as-measured
↳	91.01 range 90.32–91.70n=5, 1 batches, CV 0.655%	MPa	82°C · ETA · 12-axis · [(+-45):2/45]:s · as-measured
↳	112.4 range 108.9–115.1n=5, 1 batches, CV 2.2%	MPa	24°C · RTW · 12-axis · [(+-45):2/45]:s · as-measured
↳	80.67 range 79.29–82.05n=5, 1 batches, CV 1.27%	MPa	82°C · ETW · 12-axis · [(+-45):2/45]:s · as-measured
Ultimate Tensile Strength(σUTS)	0.03847 – 2.379	GPa	9 entriesClick to expand
Young's Modulus(E)	8.481 – 134.4	GPa	9 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

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.

HITEX 33 6k/E7K8 unidirectional tape, grade 145

Mechanical Properties

Regulatory Screening

Environmental