Fiberite HyE 997/AS4 12k

Name: Fiberite HyE 997/AS4 12k
Brand: MatWorld

Verifiedcomposite

· Fiberite HyE 997/AS4 12k

AS4 12k (Hexcel) carbon fibre (12,000-filament tow) in a 997 (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 180 °F, consistent with ambient and mildly elevated service. MatWorld carries 3 tensile, compressive, shear and bearing 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 · 1.12 mm total

Fiber Direction

+0°

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

Ply Schedule

+0°Fiberite HyE 997/AS4 12k0.1397 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.

Property OverviewNormalized to typical max values

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Data Class

Property	Value	Unit	Conditions
Bearing Yield Strength(Fbry)3 entries	34.40 range 23.00–39.20n=6, 1 batches, CV 17.9%	ksi	23°C · RTA · [0/+45/90]:3s · as-measured
↳	34.10 range 29.70–39.40n=6, 1 batches, CV 11.2%	ksi	-54°C · CTA · [0/+45/90]:3s · as-measured
↳	31.00 range 28.70–33.70n=6, 1 batches, CV 7.2%	ksi	82°C · ETW · [0/+45/90]:3s · as-measured
Compressive Modulus(Ec)	1,120 – 20,500	ksi	11 entriesClick to expand
Compressive Strength(σc)	6.800 – 273	ksi	18 entriesClick to expand
Elongation at Break(εf)	0.2670 – 4.140	-	24 entriesClick to expand
Interlaminar Shear Strength(ILSS)3 entries	18.30 range 17.60–19.60n=30, 5 batches, CV 2.35%	ksi	23°C · RTA · 13-axis · [0]:16 · as-measured
↳	23.10 range 21.10–25.30n=28, 5 batches, CV 4.91%	ksi	-54°C · CTA · 13-axis · [0]:16 · as-measured
↳	11.40 range 9.330–12.00n=30, 5 batches, CV 7.44%	ksi	82°C · ETW · 13-axis · [0]:16 · as-measured
Ultimate Tensile Strength(σUTS)	4.150 – 362	ksi	18 entriesClick to expand
Young's Modulus(E)	1,160 – 22,200	ksi	11 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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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.

Fiberite HyE 997/AS4 12k

Mechanical Properties

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Quality & Standards