Combining Specialty Materials' boron fiber with graphite prepreg, Hy-Bor® is a high-performance material with exceptional properties. Available with 4.0 and 5.6 mil boron fibers, Hy-Bor material can be manufactured to incorporate any commercially available graphite prepreg. By altering the spacing of the boron fiber in the prepreg, performance properties and material costs can be tailored to meet the needs of a variety of demanding applications.
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Typical Laminate Properties
(4.0 mil Boron/MR-40/NCT-301)
| Tensile Strength | 275 ksi
1896 MPa |
| Tensile Modulus | 35 msi
241 GPa |
| Flexural Strength | 350 ksi
2413 MPa |
| Flexural Modulus | 31 msi
214 GPa |
| Compression Strength | 400 ksi
2756 MPa |
| Compression Modulus | 35 msi
241 GPa |
| Interlaminar Shear Strength | 15 ksi
103 MPa |
| Strain | 0.86% |
| Short Beam Shear | 17 ksi
117 MPa |
| Cure Ply Thickness | 5.4 mil |
Prepreg Characteristics
| Resin Content (wt.) | 24-28% |
| Volatile Content | < 0.2% |
| Gel Time | 4-8 minutes @250° F |
| Resin Flow | 20-23% |
| Tack | 30 minutes minimum |
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