IM7/8551-7 Unidirectional Tape (MIL-HDBK-17)
Verifiedcomposite· IM7/8551-7· Cytec 8551-7
IM7/8551-7 is a carbon fiber/epoxy prepreg composite consisting of Hexcel's high-strength IM7 carbon fibers in a toughened Cytec 8551-7 epoxy matrix, supplied as unidirectional tape for autoclave processing. This material combines excellent fiber properties with a damage-tolerant resin system, making it a workhorse for aerospace structures requiring high stiffness, strength, and impact resistance in a production-friendly format. Engineers select it over standard epoxy composites when damage tolerance and processing robustness are critical, and over other IM7 formulations when both hot-wet performance and toughness matter.
aircraft primary structures (wings, fuselage)aerospace compositesdamage-tolerant designhigh-performance sporting goodsspace launch structuresindustrial automation components
Compliance & Regulations
?ITAR?EAR?Conflict Free?FDA?RoHS?REACH?TSCA?Prop 65
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| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Compressive Strength(σc) | — | ksi | T | — | |
Poisson's Ratio(ν) | — | - | notes | — | |
Shear Modulus(G) | — | ksi | notes | — | |
Ultimate Tensile Strength(σUTS) | — | ksi | L | — | |
Young's Modulus(E) | — | ksi | L | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Glass Transition Temperature(Tg) | — | °F | notes | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | — | lb/in³ | — | — |
Verified Unverified Low confidence (<80%) Link to source
Regulatory Screening
Environmental
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Safety & Biocompatibility
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.