The word metal is derived from the Greek language where it means mine or quarry when translated into English. In general, metals are good conductors of heat and electricity. Metals are ductile and malleable. By being malleable, it is meant that they can be hammered into sheets whereas ductility means one can draw them into wires. These substances have the capability of being chemical elements or alloys like iron and stainless steel respectively. This is worth knowing about AZ metals.
The definition of the term metal may vary depending on the subject of consideration. For instance, in physics, the term may refer to any material that is capable of conducting electricity at a temperature of absolute zero. Many compounds and elements that are generally not categorized under metal usually become metallic when subjected to a high level of pressure. An example is where iodine become metallic when subjected to pressure levels of between 40 and 170 thousand times that of atmospheric pressure.
The crust of the earth is composed of 25 percent of metal. It is due to their abundance that metal is very common in almost every aspect of everyday life. Different metals have different properties and that is why some are used more than others. Generally, metal exhibit a lot of resilience and strength. The strength makes them to find application in the construction of bridges and high-rise buildings.
Other products that are made of metal include home appliances, pipes, tools, vehicles, furniture, utensils, stationery, and aircraft among many others. In the old world, precious metals were used in coinage, but that has changed today. This is because coinage has now extended to at least 23 elements on the periodic table.
It is thought that the use of copper was the first instance of metal being used in history. This was about eleven millenniums ago. In the 5th millennium BCE, bronze was introduced. Materials like silver, gold, iron, brass, and lead were already in use before the introduction of bronze. Then the early forms of steel were invented before the discovery of sodium as the earliest light metal in 1809.
A lot of products and processes started using sophisticated forms of alloy following the Second World War. If a compound contains more than one element and one of the elements is a metal, the compound is called an alloy. Alloys are metallic in nature with metallic properties. The compositions of an alloy may be variable or fixed based on chemical elements it is made of.
There are various reasons why making alloys is important. The pure form of metal tends to be chemically reactive, too soft, or brittle to be used in that form. That is why making alloys is essential. When one combines different ratios of metals, they will end up with a substance whose metallic properties are different from its constituents. Alloys are made so as to make them less brittle, corrosion resistant and harder.
Alloys also have a more desirable luster or color than pure metal. Even though there are very many alloys in use today, the most abundant alloys are those of iron. The abundance is measured based on commercial use and quantity. Some common alloys of iron are tool steel, alloy steel, cast iron, stainless steel, and carbon steel.
The definition of the term metal may vary depending on the subject of consideration. For instance, in physics, the term may refer to any material that is capable of conducting electricity at a temperature of absolute zero. Many compounds and elements that are generally not categorized under metal usually become metallic when subjected to a high level of pressure. An example is where iodine become metallic when subjected to pressure levels of between 40 and 170 thousand times that of atmospheric pressure.
The crust of the earth is composed of 25 percent of metal. It is due to their abundance that metal is very common in almost every aspect of everyday life. Different metals have different properties and that is why some are used more than others. Generally, metal exhibit a lot of resilience and strength. The strength makes them to find application in the construction of bridges and high-rise buildings.
Other products that are made of metal include home appliances, pipes, tools, vehicles, furniture, utensils, stationery, and aircraft among many others. In the old world, precious metals were used in coinage, but that has changed today. This is because coinage has now extended to at least 23 elements on the periodic table.
It is thought that the use of copper was the first instance of metal being used in history. This was about eleven millenniums ago. In the 5th millennium BCE, bronze was introduced. Materials like silver, gold, iron, brass, and lead were already in use before the introduction of bronze. Then the early forms of steel were invented before the discovery of sodium as the earliest light metal in 1809.
A lot of products and processes started using sophisticated forms of alloy following the Second World War. If a compound contains more than one element and one of the elements is a metal, the compound is called an alloy. Alloys are metallic in nature with metallic properties. The compositions of an alloy may be variable or fixed based on chemical elements it is made of.
There are various reasons why making alloys is important. The pure form of metal tends to be chemically reactive, too soft, or brittle to be used in that form. That is why making alloys is essential. When one combines different ratios of metals, they will end up with a substance whose metallic properties are different from its constituents. Alloys are made so as to make them less brittle, corrosion resistant and harder.
Alloys also have a more desirable luster or color than pure metal. Even though there are very many alloys in use today, the most abundant alloys are those of iron. The abundance is measured based on commercial use and quantity. Some common alloys of iron are tool steel, alloy steel, cast iron, stainless steel, and carbon steel.
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