It's pure. Generally, national certification is licensed. gold can be made into thin gold blocks, which is easy to roll up. One ounce of gold can be hammered to 4 million feet thick, 100 square feet larger. The ancients hammered it into thin slices and were decorated in temples and palaces. These can show the flexibility and ductility of gold. The color of gold is golden yellow, with metal luster and difficult to break down. The density is 19.3 grams/cubic centimeter, and the melting point is 1064.4 ° C; good ductility, which can be pressed into thin foil, high heat transfer and conductive performance. The resistance of pure gold is 2.4P. Pure gold has good chemical corrosion resistance. It is the best. Electroplating materials. This information: . As a precious metal, gold has a good physical properties. "True gold is not afraid of fire" means that the stability of gold chemistry is high, it is not easy to react with other substances, and there is no need to worry about oxidation and discoloration. Even in the melting state, it will not be oxidized and discolored, and it will still sparkle after cooling. High density and heavy feel. Good toughness and ductility, good conductivity. Pure gold is bright yellow, but the color changes greatly after adding other metals. For example, gold and copper alloy are dark red, and silver alloy is light yellow or gray -white. . Gold is easily ground into powder, which is why gold is scattered in nature. Pure gold jewelry is also easy to wear, reducing weight. In Menjiev's cycle table, the numeral of the gold atomic order is 79, that is, the golden nucleus of the gold contains 79 protons with positive charge. At the same time, due to the semi -full rules, the accessories have good chemical stability. In the metal market, metals such as gold and 铑, 铑, 钯, 锇, 铱, and platinum are collectively referred to as precious metals. Although gold is a very soft metal, it is not as good as lead and tin. three, the nails can be marked on the pure gold. This softness makes gold very easy to process. But this is not ideal for the manufacturers of the jewelry, because it is easy to scratch the jewelry, make it losing its luster and even affect the aesthetics. Therefore, when making jewelry with gold, copper and silver should be added to improve their hardness. Gold is easy to forge and stretch. It can be grinded into a transparent green gold foil with a thickness of 0.001 mm, and 0.5 grams of gold can be pulled into a 160 -meter gold thread.
Pay content for time limit to check for freenThe answer is good, it is really good. I feel deeply, but it may also be because I went to their direct stores. Ah, sorry, there is a little bit of running the topic, and the words belong to the original. Syphill's gold is made of welded welding without solder. We know it. Anyone who is a little common sense knows that welded is not just copper chromium nickel. The golden purity of the goldenness in the interface is definitely not high, so it is still important for Safir without solder.
It is a gold brand with a high purity in China. When my brother gets married, I bought this brand. At that time, many people who knew the goods said that the gold was worth buying. Syphier's golden purity could reach 999.9 ‰. Brand stores cannot reach this value.
It's pure. Generally, national certification is licensed.
gold can be made into thin gold blocks, which is easy to roll up. One ounce of gold can be hammered to 4 million feet thick, 100 square feet larger. The ancients hammered it into thin slices and were decorated in temples and palaces. These can show the flexibility and ductility of gold. The color of gold is golden yellow, with metal luster and difficult to break down. The density is 19.3 grams/cubic centimeter, and the melting point is 1064.4 ° C; good ductility, which can be pressed into thin foil, high heat transfer and conductive performance. The resistance of pure gold is 2.4P. Pure gold has good chemical corrosion resistance. It is the best. Electroplating materials.
This information:
. As a precious metal, gold has a good physical properties. "True gold is not afraid of fire" means that the stability of gold chemistry is high, it is not easy to react with other substances, and there is no need to worry about oxidation and discoloration. Even in the melting state, it will not be oxidized and discolored, and it will still sparkle after cooling. High density and heavy feel. Good toughness and ductility, good conductivity. Pure gold is bright yellow, but the color changes greatly after adding other metals. For example, gold and copper alloy are dark red, and silver alloy is light yellow or gray -white.
. Gold is easily ground into powder, which is why gold is scattered in nature. Pure gold jewelry is also easy to wear, reducing weight. In Menjiev's cycle table, the numeral of the gold atomic order is 79, that is, the golden nucleus of the gold contains 79 protons with positive charge. At the same time, due to the semi -full rules, the accessories have good chemical stability. In the metal market, metals such as gold and 铑, 铑, 钯, 锇, 铱, and platinum are collectively referred to as precious metals. Although gold is a very soft metal, it is not as good as lead and tin.
three, the nails can be marked on the pure gold. This softness makes gold very easy to process. But this is not ideal for the manufacturers of the jewelry, because it is easy to scratch the jewelry, make it losing its luster and even affect the aesthetics. Therefore, when making jewelry with gold, copper and silver should be added to improve their hardness. Gold is easy to forge and stretch. It can be grinded into a transparent green gold foil with a thickness of 0.001 mm, and 0.5 grams of gold can be pulled into a 160 -meter gold thread.
Pay content for time limit to check for freenThe answer is good, it is really good. I feel deeply, but it may also be because I went to their direct stores. Ah, sorry, there is a little bit of running the topic, and the words belong to the original. Syphill's gold is made of welded welding without solder. We know it. Anyone who is a little common sense knows that welded is not just copper chromium nickel. The golden purity of the goldenness in the interface is definitely not high, so it is still important for Safir without solder.
It is a gold brand with a high purity in China. When my brother gets married, I bought this brand. At that time, many people who knew the goods said that the gold was worth buying. Syphier's golden purity could reach 999.9 ‰. Brand stores cannot reach this value.
The purity of Syphill's gold is still okay. If the purity is not enough, it is impossible to sell, and the state supervision is strict.