ROHSTOFFE    Borkarbid

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)

Aerospace, Blasting, Coatings, Composites, Compounds, Honing Stones, Kiln Furniture, Lapping, Polishing, Refractories

Physical & Chemical Composition
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