Casting Sand made of olivine, with its sintering point at 1450 �ºC and melting point above 1760 �ºC, provides excellent performance in iron castings (grey cast iron, nodular cast iron, tempered cast iron) and also performs well in non- ferrous castings. Using olivine as casting sand, it contributes significantly to casting companies both financially and in terms of quality. Especially in Mn castings, olivine is the definitive solution in these castings where surface roughness is important. In addition, molds made of Olivine are preferred in problematic situations between the metal materials poured during casting and the mold. Silica-containing sands react with the metal during casting, while the olivine mold does not allow the metal to enter into its body. As Olivine's high magnesium content olivine sand, when used with clays, increases its binding properties and significantly reduces the need for bentonite. Olivine's basic nature makes it an ideal choice for manganese steel production. In contrast to silica sand, olivine sand does not interact with manganese steels, keeping surface grinding costs to a minimum and giving high cleanliness casting results. Fine grain olivine sand is also commonly used in brass, bronze and aluminum castings. This is relatively due to the moisture-free properties of the material and the angularity of the particles. This property provides consistency and low permeability, resulting in castings with very good surface treatment. The angular particles of olivine sand, even when thoroughly crushed, ensure that it is still gas permeable after forging, which plays a very important role in the escape of steam in castings. Olivine has a much higher return rate than silica sand. This is due to less upheaval and less distortion in thermal shocks.
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