HexPly® 8552 Epoxy Matrix Mid-Toughened, High Strength, Damage-Resistant, Structural Epoxy Matrix Product Data Description ® HexPly 8552 is an amine cured, toughened epoxy resin system supplied with unidirectional or woven carbon or glass ® fibers. HexPly 8552 is recommended for structural applications requiring high strength, stiffness, and damage ® tolerance. HexPly 8552 was developed as a low flow system to operate in environments of up to 250°F. Impact Tolerant Low Flow HexPly 8552 is a versatile epoxy matrix system, typical uses include: Commercial Aerospace Primary Aircraft Structures Aircraft Structures Secondary Aircraft Structures Sports & Leisure Space Launchers Medical Equipment Neat Resin Properties Density Tg dry - RDS 7700 Tg wet - RDS 7700 Tensile strength Tensile modulus Tensile strain Fracture toughness, KIC Strain energy release rate, G1C Gel Time at 350°F

HexPly® 8552 Epoxy Matrix Product Data HexPly 8552 has variations and is available on a wide range of reinforcement types. Resin Variations 8552: Standard version, toughened 350°F cure epoxy Lower tack for automated tape layup Solvated tower manufacture Reinforcement Types Glass Fabrics Aramid Fabric Glass Tapes Quartz Fabric Carbon Fabrics Polyester Fabric Carbon Tapes Ceramic Fabric Carbon Towpreg Metal Fabric Typical Physical Properties Material Description Prepreg Carbon Tapes Carbon Fabrics Glass Tapes % Resin Content

HexPly® 8552 Epoxy Matrix Product Data Mechanical Properties Property 0° Tensile strength, ksi 0° Tensile modulus, msi 0° Tensile strength, ksi 0° Tensile modulus, msi 0° Tensile elongation, % 0° Tensile strength, ksi 0° Tensile modulus, msi 90° Tensile strength, ksi 90° Tensile modulus, msi 90° Tensile strength, ksi 90° Tensile modulus, msi 90° Tensile strength, ksi 90° Tensile modulus, msi Major Poisson’s Ratio, tension ± 45 Inplane shear ± 45 Inplane shear Major Poisson’s Ratio, compression 0° Compression strength, ksi 0° Compression modulus, msi 0° Compression strength, ksi 0° Compression...

HexPly® 8552 Epoxy Matrix Product Data Mechanical Properties Property Temp°F Condition 0° Short beam shear, ksi 0° Short beam shear, ksi 0° Short beam shear, ksi 0° Short beam shear, ksi 0° Short beam shear, ksi 0° Short beam shear, ksi Fill short beam shear, ksi Fill short beam shear, ksi Fill short beam shear, ksi Fill short beam shear, ksi Fill short beam shear, ksi Cure Cycle Cure Procedure Autoclave 1. Apply full vacuum and 15 psig pressure. 2. Heat at 3–5°F/minute to 225°F. 3. Hold at 225°F for 30–60 minutes. 4. Raise pressure to 85–100 psig; 5. Vent vacuum when pressure reaches 30 psig....

HexPly® 8552 Epoxy Matrix Product Data Handling and Safety Precautions Hexcel recommends that customers observe established precautions for handling resins and fine fibrous materials. Operators working with this product should wear clean, impervious gloves to reduce the possibility of skin contact and to prevent contamination of the material. Material Safety Data Sheets (MSDS) have been prepared for all Hexcel products and are available to company safety officers on request from the nearest Hexcel Sales Office. Prepreg Storage Life Tack Life: Shelf Life: 12 months at -18°C/0°F (from date of manufacture)...

HexPly® 8552 Epoxy Matrix Product Data Hexcel Corporation believes, in good faith, that the technical data and other information provided herein is materially accurate as of the date this document is prepared. Hexcel reserves the right to modify such information at any time. The performance values in this data sheet are considered representative but do not and should not constitute specification minima. The only obligations of Hexcel, including warranties, if any, will be set forth in a contract signed by Hexcel or in Hexcel's then current standard Terms and Conditions of Sale as set forth on...