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5521 Boron Epoxy Prepreg Tape

A high-performance solution to the fabrication of composite structures.

Specialty Materials' 5521 is a highly advanced prepreg tape, combining Specialty Materials' 4.0 or 5.6 mil boron filament with a tough, rigid, epoxy resin. Performing at temperatures up to 350°F, 5521 tape is an economical solution for composite structure fabrication.

Specialty Materials' 5521 prepreg tape is available in standard 1/4" and 6" wide continuous lengths to meet specific customer requirements. Nonstandard widths up to 6" are available upon request.
Typical Laminate Mechanical Properties

Material PropertyR.T.250°F (121°C)
Tensile Strength220 ksi
1520 MPa		210 ksi
1450 MPa
Tensile Modulus27 msi
195 GPa		27 msi
195 GPa
Compression Strength425 ksi
2930 MPa		181 ksi
1250 MPa
Compression Modulus30 msi
210 GPa		30 msi
210 GPa
Flexural Strength260 ksi
1790 MPa		250 ksi
1720 MPa
Flexural Modulus28 msi
190 GPa		25 msi
170 GPa
Interlaminar Shear Strength14.1 ksi
97 MPa		8.0 ksi
55 MPa
Coefficient of Thermal
Expansion		2.5 PPM/°F
4.5 PPM/°C		2.5PPM/°F
4.5 PPM/°C
Density.072 lb/in³
2.0 g/cm³		.072 lb/in³
2.0 g/cm³

Prepreg Characteristics
Resin Content (wt.)33% +/- 2%
Laminate Flow14% +/- 5%
Volatile Content1.5%
Tack (73° F)Good
Width Tolerance+/- 0.02 in.
Filament Count (nominal)208-212/in.
Roll Length (typical)500 ft.
Storage Temp.0° F

Typical Cure Conditions
Temperature...250°F (4-6°/min.)
Pressure...50-85 psi
Time...60 min. (at 250°F)


SPECIALTY MATERIALS, INC.
1449 Middlesex Street Lowell, Massachusetts 01851
Phone: 978-322-1900 • Fax: 978-322-1970
Email:info@specmaterials.com

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