What Elements Does A Tin Ingot Contain?
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What elements does a tin ingot contain?
Tin ingots are mainly composed of tin, whose chemical symbol is Sn, and are a common metal element. Tin is a rare chemical element, and its characteristics include low melting point, good ductility and corrosion resistance, making it an important metal widely used in many industrial fields.
In addition to pure tin, tin ingots may also contain a small amount of other metal elements, most of which are inevitable impurities in the process. In general, the impurity elements that may be contained in tin ingots mainly include lead, copper, iron, antimony and some other metal elements in slight amounts.
Product Parameters
| Item | Sn 99.90 | Sn 99.95 | Sn 99.99 |
| Sn %≥ | 99.9 | 99.95 | 99.99 |
| As %≤ | 0.008 | 0.003 | 0.0005 |
| Fe %≤ | 0.007 | 0.004 | 0.002 |
| Cu %≤ | 0.008 | 0.004 | 0.0005 |
| Pb %≤ | 0.032 | 0.02 | 0.0035 |
| Bi %≤ | 0.015 | 0.006 | 0.0025 |
| Sb %≤ | 0.02 | 0.014 | 0.0015 |
| Cd %≤ | 0.0008 | 0.0005 | 0.0003 |
| Zn %≤ | 0.001 | 0.0008 | 0.0003 |
| Al %≤ | 0.001 | 0.0008 | 0.0005 |
| S %≤ | 0.0005 | 0.0005 | 0.0003 |
| Ag %≤ | 0.005 | 0.0001 | 0.0001 |
| Ni+Co %≤ | 0.005 | 0.005 | 0.0006 |
Among them, lead is one of the main impurities of tin and is also a harmful element. In the process of tin smelting and refining, lead often forms an alloy with tin and becomes an inevitable impurity element. Although tin-lead alloys are used in some fields, such as tin-lead solder, excessive lead content will reduce the quality of tin and affect its application range. Therefore, the lead content needs to be strictly controlled in the process to ensure the quality of tin ingots.
In addition, tin ingots may also contain a small amount of copper, iron, antimony and other elements. These elements may affect the mechanical properties, corrosion resistance and conductivity of tin ingots, so they also need to be controlled.
In addition to the above-mentioned impurity elements, tin ingots may also contain a small amount of other metal elements, such as silver, nickel, cobalt, etc. The presence of these elements is mostly due to inevitable pollution or technical reasons during the refining and smelting process.
In general, tin ingots are mainly composed of tin elements, and also contain a small amount of other metal elements as impurities. The content of impurity elements needs to be strictly controlled in the process to ensure the quality and performance of tin ingots.
