CFRP IM7/977-3 Unidirectional

Verifiedcomposite
· IM7/977-3· aerospace CFRP UD

IM7/977-3 is a high-performance carbon fiber reinforced polymer (CFRP) composite featuring IM7 intermediate-modulus carbon fibers in a 977-3 toughened epoxy matrix, engineered for unidirectional fiber alignment to maximize strength and stiffness along the fiber direction. This system is widely used in aerospace primary structures, wind turbine blades, and high-performance sporting equipment where the combination of low weight, high fiber-direction strength, and superior matrix toughness (977-3 is Hexcel's damage-resistant formulation) provides advantages over brittle conventional epoxy systems. Engineers select IM7/977-3 when damage tolerance, impact resistance, and hot-wet performance are critical alongside weight savings—particularly in military aircraft, commercial jetliners, and harsh operating environments where intermediate fiber modulus balances stiffness gains with superior fiber toughness compared to high-modulus alternatives.

aerospace primary structureswind turbine bladesmilitary aircraftsporting goods (golf clubs, skis)high-performance marine hullsdamage-tolerant applications

Compliance & Regulations

?ITAR?EAR?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
Filter by
Orientation
PropertyValueUnitConditionsSource
Poisson's Ratio(ν)
—
-0°—
Young's Modulus(E)
—
Paunidirectional prepreg · 0° (fibre direction)—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Thermal Conductivity(k)
—
W/(m·K)0°—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Density(ρ)
—
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.