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Strontium 90% Aluminium 10% is a metallic alloy in sealed tubes, to be used in aluminium gravity, low pressure, high pressure and sand foundries, to add strontium in the composition of the alloys in order to obtain a modifying effect. The pre-weighted tubes are added in aluminium liquid alloy to modify the structure of primary silicon and induce the structure to change silicon morphology from lamellar to globular.
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