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Tin is a chemical element with the symbol Sn (for Latin: stannum) and atomic number 50. It is a main group metal in group 14 of the periodic table. Tin shows a chemical similarity to both neighboring group-14 elements, germanium and lead, and has two possible oxidation states, +2 and the slightly more stable +4.
Cast iron and cast steel are two types of iron-carbon alloys. The main difference between these alloys is the carbon content in the composition. Cast iron is rich in carbon more than cast steel. Cast iron contains over 2% of carbon and cast steel contains less than 2% of carbon in weight. The purpose of this casting with carbon is to alter the properties of iron for advanced applications. Because, iron itself alone is a soft metal and it is not ideal for construction materials.