HITEX 33 (Hitco) carbon fibre (6,000-filament tow) in an E7K8 (U.S. Polymeric) epoxy matrix, supplied as plain weave. 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 12 tensile, compressive and shear curves for this system, digitised from MIL-HDBK-17-2F Volume 2 (US Government work, public domain).
Compliance & Regulations
Fiber Direction
Ply Schedule
Laminate Code
[0/0/0/0/0/0/0/0/0/0/0/0]s
Fiber angles relative to the 0° reference direction (red arrow in 3D view). 0° = longitudinal, 90° = transverse, ±45° = shear paths.
12 interactive curves for this material
Stress-strain, S-N fatigue and environmental knockdown curves are free with an account.
Create free account| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Compressive Modulus(Ec) | 4,080 – 10,800 | ksi | 36 entriesClick to expand | ||
Compressive Strength(σc) | 44.10 – 164 | ksi | 36 entriesClick to expand | ||
Elongation at Break(εf) | 0.9840 – 1.650 | - | 10 entriesClick to expand | ||
Interlaminar Shear Strength(ILSS)4 entries | 8.670 range 7.770–9.400n=20, 1 batches, CV 5% | ksi | 24°C · RTA · 13-axis · [90:f]:6 · as-measured | ||
| ↳ | 8.830 range 8.140–9.370n=5, 1 batches, CV 6.3% | ksi | -54°C · CTA · 13-axis · [90:f]:6 · as-measured | ||
| ↳ | 9.400 range 9.200–9.730n=5, 1 batches, CV 2.1% | ksi | 24°C · RTW · 13-axis · [90:f]:6 · as-measured | ||
| ↳ | 8.350 range 7.830–8.800n=5, 1 batches, CV 4.5% | ksi | 82°C · ETW · 13-axis · [90:f]:6 · as-measured | ||
Poisson's Ratio(ν)3 entries | 0.04600 n=5, 1 batches | - | 24°C · RTA · 12-axis · [0:f]:12 · as-measured | ||
| ↳ | 0.05400 n=5, 1 batches | - | 24°C · RTW · 12-axis · [0:f]:12 · as-measured | ||
| ↳ | 0.07000 n=5, 1 batches | - | 82°C · ETW · 12-axis · [0:f]:12 · as-measured | ||
Ultimate Tensile Strength(σUTS) | 103 – 155 | ksi | 8 entriesClick to expand | ||
Young's Modulus(E) | 7,520 – 10,700 | ksi | 8 entriesClick to expand | ||