The carborundum silicon has the advantages of big volume density,
thermostability, fast heat transferring, and resistance of
acid-basic etching, strong high-temperature strength and oxidation
resistance. Its service life is 3 to 5 times of ordinary graphite
cruble. The product is widely used for the smelt and cast of all
kinds of nonferrous metals. The features are stable quality and
long service life, the content of carborundum ≥ 45%, refractoriness
≥ 1835℃, carbon content ≥ 41.40%, apparent porosity≤ 32% and volume
density ≥ 1.7g/cm3.