Boron Carbide

Applications:
Aerospace
Blasting
Coatings
Composites
Compounds
Honing Stones
Kiln Furniture
Lapping
Polishing
Refractories
Application Sizes Used Details of Application
Electrode Coatings FEPA F 240;
- 200 mesh 		Used on steel making electrodes (can be painted on). Needs to be suspended in a colloidal carrier that will adhere to graphite. Prevents oxidation by molten iron slag.
Refractory Anti-oxidant - 200; - 300 mesh Used in formulas (only .5 to1 %) of castable cement to line blast furnace throughs and runners. Forms B2O3, a very tough corrosion resistant skin which prevents further oxidation. Also used in alumina-carbon & magnesia-carbon brick for blast furnace for same reason.
Ceramic parts - 400 mesh;
- 10 micron 		Hot pressing or cold press & sintering to make blasting nozzles, crush rolls, wear parts.
Lapping FEPA F 220, F 240,
F 280, F 320, F 400, F 500		 Flat lapping on free-abrasive machine. If enough pressure applied, can cut 3 times faster than SiC on very hard metals and ceramics. Lasts about 5 times as long as SiC.
Nuclear pellets, control rods - 400 mesh Hot press or cold press & sintered. Absorbs stray neutrons in nuclear reactors.
Composites FEPA F 400, F 500 Reinforces aluminium castings
Slurry-sawing FEPA F 320,
F 360, F400,
F 500 		Saws in oil slurry under steel blades (up to 240 blades in a blade pack). Replaces SiC and lasts an extremely long time (tests so far have not worn it out!). Cuts slightly faster.
Marble polishing bricks FEPA from F 24
to F 1200		 Added to formula of marble polishing bricks to speed cut and last many times longer.
Boronizing (also Boriding) - 200 mesh Used in formulas with aluminium oxide, cryolite, and silicon carbide to impregnate surfaces of wear parts (such as oil well pipes and tools) with a thin layer of very hard iron boride (Fe2B)
Physical & Chemical Composition
Physical Properties
Hardness:
 Knoop 2600
Mohs 9,4
Melting Point 4712°F
(2600°C)
Thermal Conductivity* 210 btu/hr/ft²/in/°F of 400 °F
100 btu/hr/ft²/1 n/°F of 1600 °F
Specific Gravity 3.2 g/cc
Particle Shape Blocky, Sharp
Color Green
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