Lead antimony alloy is largely used for grids production of lead-acid battery. Antimony improves the cast ability and the subsequent handling of the grid alloy. In addition , this alloy is extremely strong and creep-resistant and can be cast into rigid , dimensionally stable grids that are capable of resisting the stresses of charge/discharge reactions.
It is also used extensively as suitable electrode in electroplating & electrowining plants.
| Elements | Specification %Wt. |
|---|---|
| Antimony (Sb) | 2.55 +/- 0.15 |
| Arsenic (As) | 0.20 – 0.25 |
| Tin (Sn) | 0.30 – 0.35 |
| Copper (Cu) | 0.05 max |
| Selerium (Se) | 0.015 – 0.025 |
| Calcium | 0.002 |
| Nickel | 0.005 max |
| Zinc (Zn) | 0.002 max |
| Bismuth (Bi) | 0.030 max |
| Cadmium (Cd) | 0.001 maax |
| Manganese (Mn) | 0.0006 max |
| Silver (Ag) | 0.004 |
| Iron (Fe) | 0.005 max |
| Pb | Balance |
Primary applications of lead tin alloy include bearing assembly,ballast, casting, step soldering, and radiation shielding.Such alloys are used for cooking utensils and toys. Alloys of tin andlead are very lustrous, and are used for stage jewellery and mirrors .Tin Lead Alloys are commonly used for their good melting, & castingproperties, as in type metals and solders. If tin is added to lead orLead Alloys, it increases the hardness and strength. Lead tin solderis widely used, particularly by the electronics industry, also used inbearings and ornamental ware.
Tin Lead Alloys is used in plumbing and electronic applications. Tinprovides the alloy the ability to wet and bond with metals such assteel and copper.
| Elements | Specification %Wt. |
|---|---|
| Tin (Sn) | 1.00 – 1.20% |
| Antimony (Sb) | 0.005% max |
| Arsenic (As) | 0.001% max |
| Bismuth (Bi) | 0.002% max |
| Iron (Fe) | 0.001% max |
| Any other impurities shall not be more than 0.001% | |
Lead Calcium Alloys are used in storage battery grids and casting applications.
| Elements | Specification %Wt. |
|---|---|
| Calcium (Ca) | 0.08 – 010% |
| Sin (Sn) | 1.00 -1.20% |
| Aluminium (Al) | 0.01 – 0.03% |
| Antimony (Sb) | 0.005% max |
| Arsenic (As) | 0.001% max |
| Bismuth (Bi) | 0.002% max |
| Iron (Fe) | 0.001% max |
| Any other impurities shall not be more than 0.001% | |
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