The earth's crust contains around 8% (by weight) of aluminum, making it the third-heaviest metal in the world after silicon and oxygen. Aluminum is a light metal, and its compounds are frequently found in nature. It is the second-largest class of metals in terms of variety, behind steel. Aluminum is a key fundamental raw material for aluminum extrusion cnc the growth of the national economy because of its conductivity, ductility, excellent properties, and wide variety of uses in the light industrial, electric power, electrical, electronic, automotive, machinery manufacture, building, packaging, and other sectors.

The main producers of aluminum in the world are: Qinghai Aluminum Plant (198,000 tons), Guizhou Aluminum Plant (195,000 tons), Baotou Aluminum Group (113,000 tons), Pingguo Aluminum Plant in Guangxi (105,000 tons), Qingtongxia Aluminum Plant (102,000 tons), etc. The top producers are also: the United States, Russia, Canada, China, Australia, Brazil, etc. China's production in 1998 ranked third in the world.

The amount of production, imports, and exports; inventories; high and low power tariffs; the extent to which appropriate alternatives are used; and the invention and development of the production process are the key elements influencing changes in aluminum prices.

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Overview of both domestic and international transactions: The London Metal Exchange (LME) has the highest volume of international aluminum contract trading, with 22.5 million hands traded in 1997 for the world's aluminum production of v slot extrusion 28 times; Domestic exchanges have listed a number of aluminum standard contracts; one of the more important exchanges is the Shanghai Metals Exchange, which opened at the end of 1992 and has been active ever since.

When compared to other metal materials, aluminum and aluminum alloys have some of the following qualities:

1 Low density

Aluminum and aluminum alloys have a density of roughly 2.7g/cm3, which is about one-third that of iron or copper.

2 High power

Aluminum has a great strength, as do aluminum alloys. Some grades of aluminum alloy can also be enhanced by heat treatment after a specific amount of cold working to improve the matrix strength.

3 Effective thermal and electrical conductivity

The only metals with better electrical and thermal conductivity than aluminum are silver, copper, and gold.

4 excellent resistance to rust

Aluminum surfaces naturally create a layer of thick, hard AL2O3 protective coating, which is excellent at preventing corrosion on the substrate. You may get high casting performance for casting aluminum alloy or good processing plasticity for deforming aluminum alloy by artificial anodic oxidation and coloring.

5 Simple processing

Aluminum alloys with high casting performance may be cast, and deformed aluminum alloys with good processing plasticity can be produced by adding certain alloying components.

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