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M74 is a high flow, 350°F (177°C) curing epoxy resin with extensive space structural heritage*. M74 is formulated for autoclave processing, but it has been successfully processed by press molding. Unidirectional tape and woven fabric impregnated with M74 resin will retain good tack and drape for at least 10 days at 70°F (21°C). Standard cure is for two hours at 350°F (177°C). Hexcel recommended lay-up procedure is HSP-L1 or HSP-L2. Recommended cure procedure is HSP-C1 or HSP-C2.

Polymer Name: Epoxy Resins & Compounds

Functions: Prepreg

Processing Methods: Compression Molding, Prepreg Processing

Technical Data Sheet

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Identification & Functionality

Composite Materials Functions

Features & Benefits

Materials Features
Product Highlights
  • 350°F (177°C) cure
  • Available in a broad range of fibers and forms
  • including tape, fabric, and tow
  • Large industry data base
  • Laminate and sandwich panel usage
  • Material widely used in space, aerospace, and
  • military structural applications
  • Autoclave or press-mold processing
  • Shelf life*: 6 months at 0°F (-18°C), 10 days at 72°F (22°C)

Applications & Uses

Composites Processing Methods

Properties

Physical Form
Neat Resin Properties
ValueUnitsTest Method / Conditions
Tensile Strength12 (83)ksi (Mpa)
Tensile Modulus0.6 (4.1)Msi (Gpa)
Flexural Strength10.0 (69)ksi (Mpa)
Flexural Modulus0.6 (4.1)Msi (Gpa)
Tg (Dry)381 (194)°F (°C)
Tg (Wet)320 (160)°F (°C)
Density1.3g/cc