Black Silicon Carbide,Carborundum Black silicon carbide is produced at high temperature in an electric resistance type furnace with quarts sand and petroleum coke as its main raw materials. Its hardness is between fused alumina and synthetic diamond. Mechanical intensity of it is higher than fused alumina. It is brittle and sharp and has electrical and heat conductivity in some degree. The abrasives made of it are suitable for working on cast iron, non-ferrous metal, rock, leather, rubber, etc. It is also broadly used as refractory material and metallurgical additive. Green Silicon Carbide(GC),Carborundum Green silicon carbide is suitable for processing hard alloy竚etallic and non-metallic materials with hard and brittle feature such as copper竍rass竌luminum竚agnesium竕ewel?optical glass竎eramics, etc. super powder of it is also a kind of ceramics material. If you are interested in the above products, pls keep us advised, we will provide more details for your reference. Thanks & Best Regards. C A E C, Sales Division LI LIN (Mr.) TEL:+86 371 67668728 FAX:+86 371 67625837 BIZ.E-MAIL: MSN: