Specialty Materials, Inc.
BORON FIBER PROPERTIES
| Property |
Units |
4-mil Boron (Typ.) |
5.6-mil Boron (Typ.) |
3-mil Boron (Typ.) |
| Diameter |
mm |
102 |
142 |
76 |
| in.x10ˉ³ |
4 |
5.6 |
3 |
| Cross-Section |
-----------------------------------------Round---------------------------------------------------- |
| Aspect Ratio |
--------------------------------------Continuous------------------------------------------------ |
| Density |
g/cc |
2.54 |
2.38 |
2.54 |
| lbs/in³ |
0.095 |
0.089 |
0.093 |
| Thermal Expansion |
PPM/°C |
4.5 |
4.5 |
4.5 |
| PPM/°F |
2.5 |
2.5 |
2.5 |
| Tensile Strength |
MPa (min.) |
3,600 |
4,000 |
- |
| ksi (min.) |
520 |
580 |
- |
| Tensile Modulus |
GPa |
400 |
400 |
- |
| msi |
58 |
58 |
- |
| Compression Strength (est.*) |
MPa |
6,900 |
- |
- |
| ksi |
>900 |
- |
- |
| Hardness |
Knoop |
3,200 |
3,200 |
3,200 |
| *Filament compression strength calculated from composite lamina property and back-out factor. |
| |
