What are the characteristics of tin s low melting point? What is the melting point of tin?

Low melting point can be made into low melting point alloys.

Such as lead-tin alloys, fusible alloys and lead-word alloys.

Tin-based alloys mainly include solder alloys, fusible alloys, and tin-based bearing alloys. At the same time, tin is also an important alloying element for other alloys, such as tin brass, tin bronze, lead-tin bearing materials, etc.

Tin undergoes an allotropic transition at , and when the temperature drops below , white tin will turn into a gray powder.

Cable sheath alloys, fuses and low melting point alloys.

The fuse is still full of use!

In addition to this, there are:

Tin element symbol sn, atomic number 50, relative atomic mass. Tin has white tin and gray tin.

and brittle tin. The common white tin is a silvery-white metal with density, melting point, boiling point 2270, soft and malleable. White tin is transformed into powdered gray tin when it is cold, and when white tin is heated to more than 160, it turns into brittle tin.

The chemical properties are relatively stable, and it does not react with air at room temperature, and can be oxidized to tin acid by concentrated nitric acid, react with hydrochloric acid to form stannous chloride, and react with concentrated alkali solution to form stannitate. It is mainly used in the production of tinplate, bronze and bearing alloys.

Tin In 1912, an expedition landed on the Antarctic continent and miraculously lost all the gasoline they had brought with them, and the expedition was wiped out. Originally, the iron cylinder containing gasoline was soldered with tin, but the metal tin began to become unstable below, losing the ductility and luster of the metal, and automatically turning into powdered gray tin, causing the oil drum to be welded. Tin is a metallic element with the chemical symbol SN.

Around 2000 B.C., humans began to use tin. The main components of bronze are tin and copper. Tin is most abundant in the earth's crust, and the main ore is cassiterite, but high-grade cassiterite is rarely seen.

Tin is easily smelted out of ore. The metal tin is soft and has a relatively low melting point. There are three allotropic forms of tin: white tin, gray tin and brittle tin.

Tin and air have almost no effect at room temperature, and the properties are relatively stable, but they can be oxidized by nitric acid to metastannic acid. Drying chlorine can oxidize tin to tin tetrachloride. In addition, tin can react with alkalis. Tin itself is not toxic, but its organic compounds are highly toxic.

The most important use of tin is to coat steel containers for food storage to protect them; It is also used to plating iron and copper to increase corrosion resistance or to increase aesthetics. Tinned sheets of iron are called tinplate. Both organic and inorganic compounds of tin are widely used in the electroplating, ceramics and plastics industries.

Tin alloys are also used in a wide range of applications, such as lead-tin alloys, fusible alloys, and lead-word alloys. Tin dichloride can be used as a reducing agent. Organotin compounds are catalysts and fungicides for polymerization.

Tin fluoride is non-toxic and is used as a preservative additive in toothpaste.

Normally, the melting point of tin is. Generally speaking, the melting point of tin bar alloy is lower than that of any of the constituent metals Taking leaded solder (tin content 63%, lead content 37%) as an example, the melting point of leaded solder is about 183. And the melting point of lead-free solder is (tin, copper or so.

Tin Profile:Tin (stannum) English name: tin, element symbol is sn.

It is a metallic element, inorganic, the ordinary form of white tin is a low melting point metal with a silvery-white luster, it is bivalent or tetravalent in the compound, it will not be oxidized by air at room temperature, and it mainly exists in the form of dioxide (cassiterite) and various sulfides (such as thiossiterite) in nature. Tin is one of the famous "hardware" - gold, silver, copper, iron, and tin.

Tin has been discovered and used since ancient times. In some ancient tombs in our country, some tin pots, tin candlesticks and other tin utensils are often excavated. According to research, during the Zhou Dynasty in China, the use of tin ware was very common. In ancient tombs in Egypt, daily necessities made of tin have also been found.

The melting point of tin metal tin is soft and bendable, melting point, boiling point 2260. There are three types of allotropes. A protective film of tin dioxide is formed on the surface of the tin in the air and is stabilized, and the oxidation reaction is accelerated under heating.

Tin reacts with halogen to form tin tetrahalide, which can also react with sulfur.

Tin is stable to water, can be slowly dissolved in dilute acid, and quickly dissolved in concentrated acid. Tin is soluble in strong alkaline solutions. It will corrode in acidic solutions of salts such as ferric chloride and zinc chloride.

Physical properties of tin

Tin is a silvery-white soft metal with a low specific gravity of 232, and if you put it in a briquette furnace, it will melt into a mercury-like liquid. The tin is soft and can be cut with a knife. Tin is chemically stable and is not easily oxidized by oxygen at room temperature, so it often retains its silver shine.

Tin is non-toxic, and people often plating it on the inner wall of copper pots to prevent copper and warm water from forming toxic patina (basic copper carbonate). Toothpaste shells are also often made of tin (toothpaste shells are made of two layers of tin sandwiched between a layer of lead. In recent years, China has gradually replaced tin with aluminum to make toothpaste shells).

Solder, which also contains tin, generally contains 61% tin, some are half lead and half tin, and some are composed of 90% lead, 6% tin and 4% antimony.

The melting point of tin is.

The chemical symbol of tin is sn, the atomic number is 50, the density, the melting point, the boiling point is 2270. Tin is a soft, malleable, silvery-white metal with a light blue tint. Chemically stable, easy to extrude, stretch, forge and cut, corrosion-resistant, fusible, and with a small coefficient of friction.

Application of tin. 1. It is used to make white iron plates, babitel alloys, tin foils, movable type gold, alloys, chemicals, etc. Materials for the electronics industry, used as high-purity reagents.

2. Reagents for the determination of arsenic and phosphate are also used in organic synthesis.

3. It is used in the manufacture of electric carbon products, friction materials, oil-impregnated bearings and powder metallurgy structural materials. It is used in the determination and organic synthesis of phosphate, and is also used as a reducing agent.

4. In the metallurgical industry, it is an additive for alloy steel, and is also used in refractory materials and special glass, integrated circuits, antennas and many other aspects.

The above content reference: Encyclopedia - Tin.

Metal tin is soft, bendable, and has a melting point, boiling point 2260. Tin (stannum) English name: tin, element symbol is sn.

Tin (stannum) English name: tin, element symbol is sn. <>

The amount of tin in the earth's crust is almost always in the form of cassiterite (tin oxide), in addition to sulphide ores with very small amounts of tin. There are 14 isotopes of tin, 10 of which are stable isotopes, which are: tin.

Uses: The metal tin is mainly used to make alloys. Tin was often used to make bronze in ancient China.

The ratio of tin to copper is 3:7. Tin is a softer metal with a low melting point and strong plasticity.

It can be made into a variety of styles with a variety of finishes, from traditional and elegant European wine utensils, candlesticks, noble and generous tea sets, to vases and delicate table ornaments, all of which are comparable to glittering silverware. With its elegant appearance and unique functional effect, pewter has long been popular all over the world, and has become people's daily necessities and good gifts for relatives and friends.

The melting point of environmentally friendly tin bars is about 180-210, and there are also high temperature and room temperature tin bars, depending on the situation.

The temperature of ordinary tin bars is slightly lower, about 180-200.

The melting point of tin is. The chemical symbol of tin is sn, the atomic number is 50, the density, the melting point, the boiling point is 2270. Tin is a soft, malleable, silvery-white microstriped light blue metal, tin is chemically stable, easy to extrude, stretch, forge and cut, corrosion-resistant, fusible, low friction coefficient, tin salt non-toxic.

The main use of tinTin has the characteristics of low melting point, good ductility, easy to alloy with many metals, non-toxic, corrosion resistance and beautiful appearance, and is widely used in electronics, food, automobiles, medicine, textiles, construction, handicrafts manufacturing and other industries. The use of tin is mainly concentrated in the fields of tin solder, tinplate, tin chemical industry and float glass.

The melting point of tin is.

As one of the "hardware" (gold, silver, copper, iron, tin), tin has been used by humans as early as 2000 BC. At present, tin is mainly used in the manufacture of solder, tinplate, alloy, chemical products, etc., and the products are widely used in electronics, information, electrical appliances, chemical industry, metallurgy, building materials, food packaging, machinery, atomic energy and aerospace industry and other industries.

Consumption and production

In the medium and long term, the growth of tin demand is inseparable from the sustained and rapid development of the electronics industry and the development of other emerging industries with tin demand. At present, in the future, when the supply of tin is difficult and the price of tin is expected to remain high for a long time, it is necessary to pay attention to the substitution of tin in the use of materials in some traditional industries.

For example, there have been phenomena such as replacing aluminum with aluminum and replacing tin alloys with other alloys in the packaging of some food materials. At present, there are very few new tin mines in the world, and the exploration of tin resources needs to increase investment to ensure long-term supply.

Before the substantial increase in tin resources, the supply of tin will be less and less based on the current supply situation. The demand for tin may be reduced by the high price of tin, especially for those products where tin accounts for a large proportion of the cost, and there may be substitution.

China is not only the world's largest tin resource reserve and tin supply, but also the world's largest tin consumer. China's tin consumption is almost equal to that of the whole of Europe and the United States combined. Therefore, China's tin supply and demand situation has an extremely important impact on the global tin supply and demand.