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Tungsten: China has the world's largest reserves, accounting for 85% of global supply. Mainly used for hard alloy, special steel and other products, and is widely used in the defense industry, aerospace information industry, known as "industrial teeth." Tungsten is resistant to high temperatures, so tungsten alloys are used in large quantities in the machinery and weapon industries. Such as the gun, gun launch tube will use tungsten alloy.
Military use bullets are made of high-density alloy steel, tungsten carbide and other materials that are much harder than tank armor. The mechanical properties of tungsten alloys are similar to those of depleted uranium and the disadvantage of depleted uranium is its advantages. The chemical properties of non-radioactive tungsten are also very stable and even at high temperatures above 1000°C will not oxidize and the hardness will not drop significantly. This is very beneficial to the high-temperature metal jets of the anti-rust bullets. Tungsten has a very high hardness and is mainly used for alloys of iron and steel metals. After adding tungsten, the hardness of steel will be greatly improved. In the field of metal processing, high-speed steel is an alloy containing tungsten. If a country does not have tungsten, the metal processing capacity under the current technological conditions will be greatly lost, leading directly to the flaws in the machinery industry, so it is called strategic metal. In addition, tungsten must also be used as a filament in the field of lighting.
Molybdenum: China ranks second in the world in reserves and accounts for 24% of global supply. It is used for refining all kinds of alloy steels, stainless steels, heat-resistant steels and super alloys. It is widely used in the military industry and is called "war metal".
Rare Earth: China ranks first in the world in reserves, and its supply accounts for over 80% of the global total. For the manufacture of composite materials, magnesium alloys, aluminum alloys, titanium alloys, etc. are vividly compared to "industrial monosodium glutamate." This is known to everyone. It goes without saying.
é”—: The reserves rank first in the world, and the output accounts for 50% of the world's total. Mainly used for night vision equipment, thermal imaging equipment, petroleum product catalysts, solar cells, etc., and is widely used in the field of optical fiber communications.
In addition, niobium, tantalum, niobium, cadmium, niobium, tantalum, niobium, titanium, nickel, zirconium, chromium, cobalt, etc., as well as nickel chromium, nickel chromium silicon, nickel aluminum, titanium aluminum, iron nickel, etc. Strategic metals have also been widely used in national defense construction. Some have been used in the manufacture of spacecrafts and military applications. For example, metal tantalum is not only of great use on artillery but also the future exploration of the necessary materials in space. Its peculiar physicochemical properties have so far been scientists. Still studying.
The special use of niobium alloys is still under research and development. For example, the Rolls-Ross Amos National Research Institute developed a niobium alloy containing yttrium in a molten steel and containing 20 wt% of titanium. This alloy is required to have a material density of 11.0 g/cm3 or less, excellent corrosion resistance to enthalpy of fusion, and resistance to oxidation at a high temperature of 800 to 1,200C for several hours. The selected T-222 alloy (Ta-10W-2.5Hf-0.01C) is being studied as a material for the Pluto detector power plant. The T-111 (Ta-8W-2Hf) alloy is currently used as a reinforcing structural material for the heat source of a wrapped heat engine used in the space. It can be seen that the supply of rare metals is a necessary condition for the development of new technologies such as atomic energy, space exploration and national defense construction of electronic computers, and radio electronics.
Strong data:
Zirconium metal is mainly used in nuclear reactors, aerospace industry and weapons manufacturing, of which 90% of the world's zirconium is processed in China; indium is mainly used in high-end areas such as LCD screens, 80% of the world's indium is produced in China, 70% of Indium is exported to Japan; China has 88% of the world's rare earth resources. In 2005, China’s exports of rare earths totaled 310 million U.S. dollars, of which exports to Japan were 180 million U.S. dollars, accounting for 58.27% of the total, ranking first, and exporting to the U.S. 30 million U.S. dollars, accounting for 10.26% , ranked second. In addition, exports of tungsten and tungsten products totaled 730 million U.S. dollars, of which exports to Japan accounted for 230 million U.S. dollars, accounting for 31.67%, ranking first, and exporting to the United States with US$ 88 million, accounting for 12.10%, ranking third. Other rare metals such as antimony, chromium, tantalum, niobium (including indium) and other rare metals exports totaled 500 million U.S. dollars, of which exports to Japan were 310 million U.S. dollars, accounting for 61.8%; exports to the U.S. were 505 million U.S. dollars, accounting for 10.94%.
Rare metal resources become investment hot spots countries need to reserve
Indium: China ranks first in the world in reserves, accounting for 80% of global supply. Mainly used for flat panel displays, alloys, semiconductor data transmission, aerospace product manufacturing. Mainly associated with lead and zinc ore, in 2005 China's primary indium output was only 410 tons. Indium, which is a companion metal, is only the content of zinc concentrate is calculated in PPM (million), is very small, and can not be regenerated.