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Specialty Materials Boron Monofilament, 4 mil (102 µm) diameter
Categories: Metal; Other Engineering Material; Composite Fibers; Pure Element

Material Notes: Exceptional modulus and strength. The Chemical Vapor Deposition process uses fine tungsten wire for the substrate and boron trichloride gas as the boron source. Elemental boron is deposited on a fine tungsten wire substrate and produced in diameters of 4.0-mil (102-micron) and 5.6-mil (142-micron). The resulting fiber is essentially amorphous boron with a fully borided-tungsten core. The textured surface provides an excellent interface in resin matrix composites, eliminating any need for sizing treatments. Primarily used in resin-matrix composites

Information provided by Specialty Materials, Inc.

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Physical PropertiesMetricEnglishComments
Density 2.54 g/cc0.0918 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Knoop 32003200
Tensile Strength, Ultimate 3600 MPa522000 psi
Modulus of Elasticity 400 GPa58000 ksitension
Compressive Strength >= 6000 MPa>= 870000 psicalculated from composite lamina
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 250 ohm-cm250 ohm-cm
 
Thermal PropertiesMetricEnglishComments
CTE, linear 4.50 µm/m-°C
@Temperature 20.0 °C
2.50 µin/in-°F
@Temperature 68.0 °F
Specific Heat Capacity 1.00 J/g-°C0.239 BTU/lb-°F
Thermal Conductivity 25.0 W/m-K174 BTU-in/hr-ft²-°Fbulk boron
Melting Point 2300 °C4170 °F
Maximum Service Temperature, Air 500 °C932 °F
 
Processing PropertiesMetricEnglishComments
Processing Temperature 1350 °C2460 °F
 
Component Elements PropertiesMetricEnglishComments
Boron, B 100 %100 %
 
Descriptive Properties
Cross-SectionRound
Length> 7600 m

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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NBORON00 / 15468

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