TMA has the capability to manufacture pure lead and a range of lead alloys to stringent user / industry determined specifications.
TMA has 4 refining kettles with capacities of 10, 20,20 & 40 metric tonnes and an automatic casting machine that outputs 10 metric tonnes per hour of dross-free and smooth top pure lead ingots. TMA's pure lead ingots have a maximum purity level of 99.99%. TMA also has the capacity to produce a range of lead alloys as per customer requirements – lead alloys of calcium, antimony, tin and silver. TMA has alloying kettles with capacities of 60-70 tonnes per batch, equipped with preheating facilities. TMA's pure lead and range of lead alloys have found a ready market across India in the manufacture of pipes, plates, bullets, automotive and tubular grids and solder alloy.
The following are standard specifications for different alloy types, however any varied specifications could also be served.
Pure Lead → Know more
Specifications
| Elements |
Composition in % |
| Antimony (Sb) |
0.001 (max) |
| Arsenic (As) |
0.001 (max) |
| Tin (Sn) |
0.001 (max) |
| Copper (Cu) |
0.001 (max) |
| Bismuth (Bi) |
0.025 (max) |
| Iron (Fe) |
0.001 (max) |
| Nickel (Ni) |
0.001 (max) |
| Silver (Ag) |
0.003 (max) |
| Zinc (Zn) |
0.001 (max) |
| Calcium (Ca) |
0.0005 (max) |
| Sulphur (S) |
0.0005 (max) |
| Aluminum (Al) |
0.0005 (max) |
| Selenium (Se) |
0.0005 (max) |
| Cadmium (Cd) |
0.0005 (max) |
| Tellurium (Te) |
0.0010 (max) |
| Lead (Pb) |
99.970 (min) |
Applications
Manufacture of pipes, plates and bullets, lead oxides/lead sub-oxide.
Lead Selenium Alloy → Know more
Specifications
| Elements |
(%) Limits |
| Antimony (Sb) |
2.500 +/- 0.250 |
| Arsenic (As) |
0.150 +/- 0.050 |
| Tin (Sn) |
0.250 +/- 0.050 |
| Selenium (Se) |
0.030 +/- 0.005 |
| Other Impurities |
Within specified limits |
Applications
Manufacture of automotive/tubular grids in battery industry.
Lead Calcium Alloy → Know more
Specifications
| Elements |
(%) Limits> |
| Calcium (Ca) |
0.120 +/- 0.020 |
| Aluminum (Al) |
0.030 +/- 0.010 |
| Tin (Sn) |
0.400 +/- 0.100 |
| Other Impurities |
Within specified limits |
Applications
Manufacture of automotive / VRLA battery plates.
Lead Antimony Alloy → Know more
Specifications
| Elements |
(%) Limits |
| Antimony (Sb) |
4.500 +/- 0.250 |
| Arsenic (As) |
0.150 +/- 0.025 |
| Tin (Sn) |
0.250 +/- 0.050 |
| Sulphur (S) |
0.003 - 0.008 |
| Copper (Cu) |
0.040 - 0.060 |
| Other Impurities |
Within specified limits |
Applications
Manufacture of automotive/tubular grids in battery industry.
Lead Tin Alloy → Know more
Specifications
| Elements |
(%) Limits |
| Antimony (Sb) |
0.001 (max) |
| Arsenic (As) |
0.001 (max) |
| Bismath (Bi) |
0.025 (max) |
| Iron (Fe) |
0.001 (max) |
| Copper (Cu) |
0.001 (max) |
| Tin (Sn) |
20-80 (As per requirement) |
| Other Impurities |
Within specified limits |
Applications
Manufacture of solder alloy.
Lead Silver Alloy → Know more
Specifications
| Elements |
(%) Limits |
| Tin (Sn) |
0.07 - 0.09 |
| Calcium (Ca) |
0.07 - 0.09 |
| Aluminium (Al) |
0.02 - 0.04 |
| Silver (Ag) |
0.012 - 0.015 |
| Other Impurities |
Within specified limits |
Lead Sub-oxide→ Know more
The greyish coloured lead oxide is also known as lead sub oxide, grey oxide and battery oxide. TMA produces lead oxide in its ball mill with capacities of 10-30 tonnes per batch through the exothermic reaction.
Specifications
| Attributes |
Composition |
| Colour |
Blackish to greenish grey |
| Crystal Structure |
Tetragonal |
| Apparent Density |
1.4-1.6 |
| Retention on 240 mesh (63 micron) (max %) |
0.1 |
| Retention on 325 mesh % |
2 |
| Water Absorption mg/gm |
110-120 |
| Acid Absorption mg/gm |
160-200 |
| Free Lead (% Max) |
25-40 |
| Lead Monoxide (%) |
60-75 |
Applications
Manufacture of plates in lead acid batteries.