Features: white, soft and conductive.
Country of manufacture: China, Japan and Korea.
Uses: Indium is most commonly used in alloy, solder and soft metal high vacuum sealing in semiconductor industry. During World War II, it was used to coat the bearings of aircraft engines, but now it is used to make corrosion-resistant mirrors.
9. Silver
896.52 USD/kg (data: August 7, 2020)
The most precious metal in the world is not gold? The top ten precious metals list reveals the secrets for you.
Metallic silver
We are all familiar with metallic silver. Silver naturally exists in agarwood and amphibole, which is the product of gold smelting. Among all metals, silver has the best thermal and electrical conductivity and the lowest contact resistance. This means that it is one of the most common precious metals.
Features: silvery white, soft material, electrical and thermal conductivity.
Producers: China, Peru, Mexico and Chile.
Uses: Its wide applications include the most common jewelry, coin making, photography, dentistry, batteries and circuits. In addition, it has many technical applications. For example, to control odor and prevent the spread of bacteria, and everyone likes to buy silver jewelry, because it is cheaper than gold, but it has many characteristics like gold. Silver is also used in electronic components of ball mills.
8. Uses of Rhen: Nickel-rhenium alloys can be used to manufacture combustion chambers of jet engines. These alloys for turbine blades and exhaust nozzles contain up to 6% rhenium. This is the biggest practical application of rhenium. Secondly, as a catalyst in the chemical industry, rhenium is more difficult to obtain than diamonds, so it is expensive. Rhenium is very important in military strategy because it can be used in efficient jet engines and rocket engines.
7. Ruthenium
8680.70 USD/kg (data: August 7, 2020)
The most precious metal in the world is not gold? The top ten precious metals list reveals the secrets for you.
Metal ruthenium
Ruthenium is one of the platinum group metals and a rare transition metal, and its content in the earth's crust is only one billion. 1844, Karl Ernst claus, a Russian scientist, discovered this element in Kazan National University, and later took his hometown Ruthenia as the Latin name of this element.
Features: light gray, strong fire resistance, hard and brittle.
Manufacturing countries: Russia, North America, South America and Canada.
Uses: Ruthenium is usually used in electronic products. It is cheaper than rhodium and has very similar properties. It is usually used to produce electrical contacts, wires and electrodes. It is also used as catalyst in electrochemistry. Another new application is as the covering layer of extreme ultraviolet mask.
6. Osmium (osmium)
14, 109.58 USD/kg (data: April 24, 2020)
The most precious metal in the world is not gold? The top ten precious metals list reveals the secrets for you.
Osmium metal
Osmium is a rare metal with high density and the highest density in the world. This kind of metal is extremely difficult to mine, because the melting point of osmium is very high, as high as more than 3000 degrees.
Features: blue-silver, high melting point, hard and fragile.
Manufacturing countries: Russia, North America and South America
Uses: Osmium has many different uses, but it is most commonly used to harden alloys, electrical contacts and filaments.