History of lead. Mechanical and physical properties of lead alloys.
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Technical specifications
Lead is a heavy plastic metal bluish-gray color. Its melting point is 327.4 ° C. One of its main advantages is chemical inertness and protection from gamma radiation, which explains the popularity of its application in the chemical industry, nuclear energy and medicine.
| Chemical symbol | Pb |
| Specific gravity | 11.3415 g / cm³ |
| Atomic mass | 207.2 |
| Degree of oxidation | 0 +2, +4 |
| Melting temperature | 327.46 ° C |
| Boiling temperature | 1749 ° C |
| Specific heat of fusion | 4.77 kJ / mol |
Application
Production of battery plates (for such purposes, not less than 30% of the metal is consumed), sheaths of high-current electrical cables, and also as the main part of the screens for effective protection against x-ray and hard γ-radiation. This metal is an important component of antifriction alloys and semiconductor devices, in the near past it was actively used in the printing business. Supplier Avlob offers to buy any non-ferrous metal at a bargain price. The price is the best in this segment of rental.
History
The smelting of lead from ores close to the earth’s surface made it possible for even the builders of Ancient Rome to build unique aqueducts and water pipes, thanks to which the cities of the Roman Empire were supplied without water with water. Thanks to the ease of its smelting, lead was used by the ancients primarily as ornaments. The first known examples of such ornaments date back to the 6th millennium BC. In ancient Greece, lead plates covered the underwater part of warships, and in Europe and the Middle East, ritual figures of the gods were made. Later, in the Middle Ages, letters and documents were written with lead sticks, covered the roofs of noble people’s houses, and the alchemists unsuccessfully searched for the recipes for turning lead into gold.
Delivery, price
Are you interested in the properties and history of lead? Supplier Avlob offers to buy lead at a bargain price. The price is formed on the basis of European production standards. Supplier Avlob offers to buy any non-ferrous metal at the optimal price in bulk or at retail.