Description
Copper for sale (Cu), chemical element, a reddish, extremely ductile metal of Group 11 (Ib) of the periodic table that is an unusually good conductor of electricity and heat. Copper is found in the free metallic state in nature. This native copper was first used (c. 8000 BCE) as a substitute for stone by Neolithic (New Stone Age) humans. Metallurgy dawned in Mesopotamia as copper was cast to shape in molds (c. 4000 BCE), was reduced to metal from ores with fire and charcoal, and was intentionally alloyed with tin as bronze (c. 3500 BCE). The Roman supply of copper came almost entirely from Cyprus. It was known as aes Cyprium, “metal of Cyprus,” shortened to cyprium and later corrupted to cuprum. In the new age Copper has been found in Africa and has a huge impact on world supply.
Native copper is found at many locations as a primary mineral in basaltic lavas and also as reduced from copper compounds, such as sulfides, arsenides, chlorides, and carbonates. (For mineralogical properties of copper, see the table of native elements.) Copper occurs combined in many minerals, such as chalcocite, chalcopyrite, bornite, cuprite, malachite, and azurite.
copper for sale by the pound, copper for sale ireland, copper for sell, copper bullion bars for sale, copper metal sale, sale of copper scrap,
It is present in the ashes of seaweeds, in many sea corals, in the human liver, and in many mollusks and arthropods. Copper plays the same role of oxygen transport in the hemocyanin of blue-blooded mollusks and crustaceans as iron does in the hemoglobin of red-blooded animals. Gold for sale
The copper present in humans as a trace element helps catalyze hemoglobin formation. A porphyry copper deposit in the Andes Mountains of Chile is the greatest known deposit of the mineral. By the early 21st century Chile had become the world’s leading producer of copper. Other major producers include Peru, China, United States and mainly Africa.
Our Copper is commercially produced mainly by smelting or leaching, usually followed by electrode position from sulfate solutions. For a detailed treatment of the production of copper, see our copper processing. The major portion of the copper we produce is used by electrical industries; most of the remainder is combined with other metals to form alloys. (our copper is also technologically important as an electroplated coating.)
Important series of alloys in which copper is the chief constituent are brasses (copper and zinc), bronzes (copper and tin), and nickel silvers (copper, zinc, and nickel, no silver). There are many useful alloys of our copper and nickel, including Monel; the two metals are completely miscible.Our Copper also forms an important series of alloys with aluminum, called aluminum bronzes. Beryllium copper (2 percent Be) is an unusual copper alloy in that it can be hardened by heat treatment.
Our Copper is a part of many coinage metals. Long after the Bronze Age passed into the Iron Age, copper remained the metal second in use and importance to iron. By the 1960s, however, cheaper and much more plentiful aluminum had moved into second place in world production.
BUY COPPER CATHODE FROM US
1. SPECIFICATIONS
Product: Copper Cathodes Grade A (Electrolytic Copper Grade)
(LME standards) Standard Cu Cathode-1, purity 99.99%
Dimension: 914mm x 914mm x 12mm (LME standards)
Weight of each sheet: 125kgs (+/- 1%)
Net weight of each pallet: 2mts (+/- 1%)
Min. weight in each container: 20mts approx.
Gross weight of each container: 22.20mts approx.
Packing: palletized banded by aluminum bands
2. CHEMICAL COMPOSITION
Copper (Cu) : min% 99.99%
Other materials may be present which are described below:
Oxygen O2 —
Sulfur S:………………………………………..4 PPM
Iron Fe:…………………………………………2 PPM
Silver(Argent) Ag::…………………………10 PPM
Lead Pb:………………………………………0.2 PPM
Nickel Ni:…………………………………….0.2 PPM
Selenium Se:…………………………………0.3 PPM
Antimony Sb:……………………………….0.1 PPM
Silica Si:………………………………………0.3 PPM
Cobalt Co:……………………………………0.2 PPM
Arsenic As:…………………………………..0.1 PPM
Bismuth Bi:………………………………….0.1 PPM
Manganese Mn:…………………………….0.1 PPM
Tellurium Te:……………………………….0.05 PPM
Aluminum Al:………………………………..0.5 PPM
Magnesium Mg:……………………………..0.4 PPM
Zinc Zn:…………………………………………0.4 PPM
Reviews
There are no reviews yet.