Characteristics: White, soft material, conductive
Producing countries: China, Japan, South Korea
Uses: Indium is most commonly used in the semiconductor industry for products such as alloys, solders, and soft-metal high-vacuum seals. It was used to coat airplane engine bearings during World War II, but is now used to make more corrosion-resistant mirrors.
9, silver (Silver)
896.52 U.S. dollars / kg (data: August 7, 2020)
The world's most valuable metal is actually not gold? Top 10 Precious Metals List Revealed for You
Metallic Silver
We're all familiar with metallic silver, which occurs naturally in sedum and hornblende ores, and is a product created by smelting gold. Of all the metals, silver has the best thermal and electrical conductivity and the lowest contact resistance. This means he is one of the most versatile precious metals.
Characteristics: Silver-white, soft, electrically and thermally conductive
Producing countries: China, Peru, Mexico and Chile
Uses: Its wide range of uses includes the most familiar on jewelry, coin making as well as photography, dentistry, batteries and electrical circuits. In addition, it has many technical applications. For example, it controls odors and prevents the spread of germs, and everyone likes to buy jewelry made of silver because it is cheaper than gold but has many of the same properties as gold. Silver is also used in the electronic components of ball mills.
8, rhenium (Rhenium) use: nickel rhenium high-temperature alloys can be used in the manufacture of jet engine combustion chambers, turbine blades and exhaust nozzles these alloys contain up to 6% rhenium. This is the largest practical application of rhenium, followed by the chemical industry as a catalyst, rhenium is more difficult to obtain than diamonds, so the price is high. Because rhenium can be used in high-performance jet engines and rocket engines, it is very important in military strategy.
7, ruthenium (Ruthenium)
8,680.70 U.S. dollars / kg (data: August 7, 2020)
The world's most valuable metal is not gold? Top 10 Precious Metals List Revealed for You
Metal Ruthenium
Ruthenium, a member of the platinum group of metals, is a rare transition metal found in the earth's crust at a level of only one part in a billion.The element was discovered by the Russian scientist Karl Ernst claus in 1844 at the Kazan State University, and was subsequently given the Latin name for the element, after his hometown of Ruthenia.
Characteristics: light gray, refractory, hard and brittle
Producing countries: Russia, North and South America, and Canada
Uses: Ruthenium is commonly used in electronics. It is cheaper than rhodium and has very similar properties and is commonly used in the production of electrical contacts, wires and electrodes. It is also used as a catalyst in electrochemistry. Another new use is as a cover layer for photomasks for extreme ultraviolet light.
6, Osmium (Osmium)
14,109.58 U.S. dollars / kg (data: April 24, 2020)
The world's most valuable metal is not gold? The Top 10 Precious Metals List Reveals It
Osmium Metal
Osmium is a high-density rare metal and the densest metal in the world. This metal is extremely difficult to mine because osmium has a very high melting point of over 3,000 degrees.
Characteristics: bluish-silver color, high melting point, hard and brittle
Producing countries: Russia, North America, South America
Uses: Osmium has a number of different uses, but is most commonly used in hardening alloys, electrical contacts, and filaments.