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Formula: B
Form: Filament
Material: Boron
CAS Number: 7440-42-8
Commodity: Metals
Boron Filaments, also known as Boron Fibers, are a type of high-strength, lightweight material that are primarily used in advanced aerospace structures and composite materials. They are produced by depositing elemental boron onto a heated tungsten wire. These fibers are also used in consumer and sporting goods such as golf clubs and fishing rods. Their high strength and heat resistance make them suitable for reinforcing composite materials like ceramics, metals, and epoxy resins.
Tolerances
Filament
| Diameter | ±20% | |
|---|---|---|
| Length | +5% / -1% |
Material Properties for Metals
Atomic Properties
| Element | Value |
|---|---|
| Atomic number | 5 |
| Crystal structure | Tetragonal |
| Electronic structure | He 2s² 2p¹ |
| Valences shown | 3 |
| Atomic weight( amu ) | 10.81 |
| Thermal neutron absorption cross-section( Barns ) | 672 |
| Photo-electric work function( eV ) | 4.5 |
| Natural isotope distribution( Mass No./% ) | 11/ 80.2 |
| Natural isotope distribution( Mass No./% ) | 10/ 19.8 |
| Atomic radius - Goldschmidt( nm ) | 0.097 |
| Ionisation potential( No./eV ) | 4/ 259 |
| Ionisation potential( No./eV ) | 2/ 25.2 |
| Ionisation potential( No./eV ) | 1/ 8.30 |
| Ionisation potential( No./eV ) | 5/ 340 |
| Ionisation potential( No./eV ) | 337.9 |
Mechanical Properties
| Element | Value |
|---|---|
| Hardness - Mohs | 9.5 |
| Material condition | Arc melted |
| Tensile modulus( GPa ) | 441 |
| Tensile strength( MPa ) | 1580-2410 |
Electrical Properties
| Element | Value |
|---|---|
| Electrical resistivity( µOhmcm ) | 1.8x10¹²@27@27°C |
Physical Properties
| Element | Value |
|---|---|
| Boiling point( C ) | 3700 |
| Density( gcm⁻³ ) | 2.34-2.37@20°C |
Thermal Properties
| Element | Value |
|---|---|
| Melting point( C ) | 2180 |
| Latent heat of evaporation( J g⁻¹ ) | 35000 |
| Latent heat of fusion( J g⁻¹ ) | 2090 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 1030@25°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 8.3@0-100°C |
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Boron Foil Formula: B
Percentage Purity: 99.6%
Thickness: 2mm
Length 1: 25mm
Length 2: 25mm
Production Method: Hot Pressed
CAS Number: 7440-42-8
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Sapphire Filament Formula: Al₂O₃ 99.9
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Boron Powder Formula: B
Percentage Purity: 92.1%
Mean Particle Size (FSSS): 1µm
Weight: 200g
Structure: Amorphous
Type: Amorphous
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Boron Rod Formula: B
Percentage Purity: 99.6%
Diameter: 5mm
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Fused Quartz Filament Formula: SiO₂
Diameter: 0.1mm
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