CFRP IM7/8552 Unidirectional

Verifiedcomposite
· IM7/8552· Hexcel 8552

CFRP IM7/8552 is an autoclave-processed carbon fiber reinforced polymer composite combining Hexcel's high-strength IM7 carbon fibers with a toughened 8552 epoxy matrix, engineered as a unidirectional lamina for primary load-bearing applications. This material system is widely specified in aerospace structures—including aircraft fuselages, wings, and control surfaces—and increasingly adopted in high-performance sporting goods and industrial equipment where weight reduction, damage tolerance, and thermal stability are critical. The IM7/8552 combination is valued over competing systems for its balance of fiber stiffness, matrix fracture resistance, and processing robustness in demanding environments.

aerospace primary structuresaircraft fuselage and wing componentshigh-performance sporting equipmentwind turbine bladesindustrial pressure vesselsautomotive performance applications

Compliance & Regulations

?ITAR?EAR?Conflict Free?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
FiberHexcel IM7 Carbon
MatrixHexcel 8552 Toughened Epoxy
ProcessAutoclave prepreg
Cure180°C / 120 min / 0.7 MPa
Vf57%

Ply Schedule

+0°IM7 Carbon/8552 Epoxy0.131 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
PropertyValueUnitConditionsSource
Compressive Strength(σc)
1.690
GPa—
Elongation at Break(εf)
1.620
-—
Fracture Toughness(KIC)
1,720,000
Pa·√m—
Poisson's Ratio(ν)
0.3200
-—
Shear Modulus(G)
5.600
GPa—
Ultimate Tensile Strength(σUTS)
2.724
GPa—
Young's Modulus(E)
164.0
GPa—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Glass Transition Temperature(Tg)
473
K—
Maximum Service Temperature(Tmax)
394
K—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Density(ρ)
1.570
kg/m³—
Verified Unverified Low confidence (<80%) Link to source

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.