Boron fibre in an epoxy matrix. Boron/epoxy has exceptional specific stiffness and compressive strength — boron filament is markedly stiffer than carbon and does not buckle under compression the way graphite does. Historically used for empennage skins and stiffeners on military aircraft, its enduring role is bonded composite repair: boron patches restore stiffness to cracked metallic structure without the galvanic problems carbon introduces against aluminium. The handbook characterises it from -67 °F to 375 °F, consistent with elevated-temperature service. MatWorld carries 52 tensile, compressive and shear curves for this system, digitised from MIL-HDBK-17-2F Volume 2 (US Government work, public domain).
Compliance & Regulations
Fiber Direction
Ply Schedule
Laminate Code
[0/0/0/0/0/0]s
Fiber angles relative to the 0° reference direction (red arrow in 3D view). 0° = longitudinal, 90° = transverse, ±45° = shear paths.
25 interactive curves for this material
Stress-strain, S-N fatigue and environmental knockdown curves are free with an account.
Create free account| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Poisson's Ratio(ν)2 entries | Curve (16 pts) | - | 127°C · ETA · 12-axis · Parallel Laminate [0:6] · Parallel Laminate [0:6] | ||
| ↳ | Curve (10 pts) | - | 191°C · ETA · 12-axis · Parallel Laminate [0:6] · Parallel Laminate [0:6] | ||
Stress–Strain Curve(σ–ε) | — | Pa | 23 entriesClick to expand | ||