On March 19, 2022, the international gold price was temporarily US $1921.41/oz, the Hong Kong gold price was HK $20740 / Liang, the international platinum price was temporarily US $1029.3/oz, the international palladium price was temporarily US $2481.9/oz, the domestic gold price was temporarily US $393 / g, and the Chinese gold base gold price was 393 yuan / g [extended data] gold is the elemental form of the chemical element gold (AU), which is a soft, golden yellow, corrosion-resistant precious metal. Gold is one of the rare, precious and highly valued metals. In the world, gold is generally measured in ounces. In ancient China, the unit of gold was "Liang", which is a very important metal. It is not only a special currency for reserve and investment, but also an important material for jewelry industry, electronics industry, modern communications, aerospace industry and other sectors the chemical symbol of gold is Au, and the financial English code is XAU or gold. The name of Au comes from a story of Aurora, the goddess of dawn in Roman mythology, which means shining dawn as of October 12, 2021, the gold price was US $1760 / oz physical properties: 1. Color when gold is melted, the steam emitted is yellow green; Its gold powder is usually brown in the smelting process; If it is cast into a thin piece, it can transmit green light 2. The ductility is abnormally strong. One ounce of gold can be pulled to 50 miles long. Its ductility makes it easy to cast. It is a good choice for making jewelry. Gold has the strongest tensile force among all metals 3. The malleability is second to none. It is possible to create extremely thin gold sheets that are easy to roll up. An ounce of gold can be hammered as thin as 400 millionths of a foot thick and 100 square meters_ Large area. The ancient people hammered it into thin sheets to lay it on temples and palaces for decoration. All these can show the flexibility and malleability of gold the color of gold is golden yellow, metallic luster and difficult to decompose. Density 19.3g/cm3, melting point 1064.4 ℃; It has good ductility, can be pressed into thin foil, has extremely high heat transfer and conductivity, and the resistance of pure gold is 2.4p. Pure gold has good chemical corrosion resistance and is the best plating material as a precious metal, gold has good physical properties. "Real gold is not afraid of fire" means that gold has high chemical stability and is not easy to react with other substances. There is no need to worry about oxidation and discoloration. Even in the molten state, it will not oxidize and change color, and it will still shine after cooling. High density and heavy feel. Good toughness and ductility, good conductivity. Pure gold has a brilliant yellow color, but the color changes greatly after being mixed with other metals, for example, the gold copper alloy is dark red, and the silver containing alloy is light yellow or gray white. Gold is easy to be ground into powder, which is also the reason why gold is dispersed in nature. Pure gold jewelry is also easy to be worn and reduce its weight.
On March 19, 2022, the international gold price was temporarily US $1921.41/oz, the Hong Kong gold price was HK $20740 / Liang, the international platinum price was temporarily US $1029.3/oz, the international palladium price was temporarily US $2481.9/oz, the domestic gold price was temporarily US $393 / g, and the Chinese gold base gold price was 393 yuan / g
[extended data]
gold is the elemental form of the chemical element gold (AU), which is a soft, golden yellow, corrosion-resistant precious metal. Gold is one of the rare, precious and highly valued metals. In the world, gold is generally measured in ounces. In ancient China, the unit of gold was "Liang", which is a very important metal. It is not only a special currency for reserve and investment, but also an important material for jewelry industry, electronics industry, modern communications, aerospace industry and other sectors
the chemical symbol of gold is Au, and the financial English code is XAU or gold. The name of Au comes from a story of Aurora, the goddess of dawn in Roman mythology, which means shining dawn
as of October 12, 2021, the gold price was US $1760 / oz
physical properties:
1. Color
when gold is melted, the steam emitted is yellow green; Its gold powder is usually brown in the smelting process; If it is cast into a thin piece, it can transmit green light
2. The ductility
is abnormally strong. One ounce of gold can be pulled to 50 miles long. Its ductility makes it easy to cast. It is a good choice for making jewelry. Gold has the strongest tensile force among all metals
3. The malleability
is second to none. It is possible to create extremely thin gold sheets that are easy to roll up. An ounce of gold can be hammered as thin as 400 millionths of a foot thick and 100 square meters_ Large area. The ancient people hammered it into thin sheets to lay it on temples and palaces for decoration. All these can show the flexibility and malleability of gold
the color of gold is golden yellow, metallic luster and difficult to decompose. Density 19.3g/cm3, melting point 1064.4 ℃; It has good ductility, can be pressed into thin foil, has extremely high heat transfer and conductivity, and the resistance of pure gold is 2.4p. Pure gold has good chemical corrosion resistance and is the best plating material
as a precious metal, gold has good physical properties. "Real gold is not afraid of fire" means that gold has high chemical stability and is not easy to react with other substances. There is no need to worry about oxidation and discoloration. Even in the molten state, it will not oxidize and change color, and it will still shine after cooling. High density and heavy feel. Good toughness and ductility, good conductivity. Pure gold has a brilliant yellow color, but the color changes greatly after being mixed with other metals, for example, the gold copper alloy is dark red, and the silver containing alloy is light yellow or gray white. Gold is easy to be ground into powder, which is also the reason why gold is dispersed in nature. Pure gold jewelry is also easy to be worn and reduce its weight.