TIN
Tin is a chemical element with the symbol Sn (for Latin: stannum) and atomic number 50, is a post-transition
metal in group 14 of the periodic table. It is obtained chiefly from the mineral cassiterite, which contains tin dioxide, SnO2. Tin is the 49th most abundant
element and has, with 10 stable isotopes, the largest number of stable isotopes in the periodic table, thanks to its magic number of protons. It has two main allotropes: at room temperature, the stable allotrope is
β-tin, a silvery-white, malleable metal, but at low temperatures it transforms into
the less dense grey α-tin, which has the diamond cubic structure. Metallic tin is not easily oxidized in air. Tin is
also part of the the carbon family
Young's modulus 50 GPa
Shear modulus 18 GPa
Bulk modulus 58 GPa
Poisson ratio 0.36
Brinell hardness 50–440 MPa
MICROSTRUCTURE
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