About Tin/Primary Tin Ingots
Tin is a chemical element with the symbol Sn (Latin: stannum) and atomic number 50. It is a main group metal in group 14 of the periodic table. Commercial grades of tin (99.8%) resist transformation because of the inhibiting effect of the small amounts of bismuth, antimony, lead, and silver present as impurities. Alloying elements such as copper, antimony, bismuth, cadmium, and silver increase its hardness. Tin tends rather easily to form hard, brittle intermetallic phases, which are often undesirable. It does not form wide solid solution ranges in other metals in general, and there are few elements that have appreciable solid solubility in tin. Simple eutectic systems, however, occur with bismuth, gallium, lead, thallium, and zinc. |
Chemical Composition:
Elements | Composition(m/m) |
Sn | Min 99.85% |
Al | Max 0.001% |
Ar | Max 0.03% |
Bi |
Max 0.03% |
Cd |
Max 0.001% |
Cu |
Max 0.05% |
Fe |
Max 0.01% |
Pb |
Max 0.05% |
Sb |
Max 0.05% |
Zn |
Max 0.001% |

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Today: Feb 20, 2019
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