Boron Carbide (B4C) - Applications and Properties

Boron Carbide is one of the hardest man-made materials available in commercial quantities that has a finite melting point low enough to permit its relatively easy fabrication into shapes. Some of Boron Carbide’s unique properties include: high hardness, chemical inertness, and a high neutron absorbing cross section. Washington Mills is the only manufacturer of Boron Carbide in North America.

Description

Boron Carbide is one of the hardest man-made materials available in commercial quantities that has a finite melting point low enough to permit its relatively easy fabrication into shapes.

Applications of Boron Carbide

Boron Carbide, due to its high hardness, chemical inertness, and high neutron absorption cross section, is well suited to a variety of industrial applications including:

  • Wear parts such as blasting nozzles, wire-drawing dies, powdered metal and ceramic forming dies, thread guides, and armor.
  • Abrasives for lapping and ultrasonic cutting
  • Nuclear applications such as reactor control rods and neutron absorbing shielding
  • Anti-oxidant in carbon-bonded refractory mixes

BORON CARBIDE is graded to FEPA specifications

Typical Chemical Analysis of Boron Carbide

Following table describes the typical chemical analysis of Boron Carbide.

TYPICAL CHEMICAL ANALYSIS
Chemical High Purity
Total Boron Min. 76.5%
Total Carbon 21.5%
Total B + C Min. 98.0%
Iron 0.2%

Typical Physical Properties of Boron Carbide

Following table describes the typical physical properties of Boron Carbide.

TYPICAL PHYSICAL PROPERTIES
Physical Property Specification
Crystallography Rhombohedral
Color Black
Specific Gravity 2.52
Knoop100 Hardness 2800
Shape Blocky - Angular
Melting Point 2350º C
Grading FEPA 42-GB-1984 (R1993)

Grain Sizes Available

Boron Carbide is available in the following grit sizes from Washington Mills:

6, 8, 10, 12, 14, 16, 20, 24, 30, 36, 46, 54, 60, 70, 80, 90, 100, 120, 150, 180, and 220

Powder Sizes Available

Washington Mills can supply Boron Carbide in the following powder sizes:

240, 280, 320, 400, 500, 600, 800, and 1000

Also available in group-grades, for specific customer requests.

This information has been sourced, reviewed and adapted from materials provided by Washington Mills.

For more information on this source, please visit Washington Mills.

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Comments

  1. Cabir Ismaili Cabir Ismaili Turkey says:

    I need information about boron carbide allowable amount from FDA

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