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Silica sand is an extremely good material for making casting moulds because it has the ability to withstand the temperature of the molten metal. It can absorb and transmit heat, and has sufficient permeability to allow gasses generated during casting to pass between the particles without causing casting defects. Foundry sand is made within strict particle size distribution to tailor the properties of the materials to the intended casting process.

This calculator calculates the percentage of sand silica using weight of insoluble ash, weight of sample values.