Metal is a word that is derived from the Greek language. When it is translated into English, it means a mine or quarry. Metals are very good conductors for both heat and electricity. There are two properties of metals, namely malleability and ductility. The ability of these materials to be flattened into sheets is referred to as malleability while that of being able to be drawn into wires is called ductility. Metals can be chemical components such as iron or they can be alloys like stainless steel. This is what AZ metals are all about.
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 earth crust comprises of 25 percent of metal. Metal is very common in nearly all aspects of life because of its abundance. Various metals have dissimilar properties and this is the reason for some being more useful than others. In general, a lot of strength and resilience is exhibited by metal. This strength makes them to find use in the building of high-rise structures and bridges.
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 several reasons why it is important to make alloys for use. One of these reasons is that metal in its pure form tends to be too brittle, soft, or chemically reactive to be put to any practical use. When different ratios of metals are combined, their properties are modified to achieve desirable characteristics. The reason why alloys are made is to make them harder, corrosion resistant, and less brittle.
The color or luster of alloys is also more desirable than that of a pure metal. Iron alloys are very many and they are the most commonly used even though others exist too. Abundance is measured by quantity and usage. Common alloys of iron include cast iron, carbon steel, alloy steel, stainless and tool steel are some of the regular alloys of iron.
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 earth crust comprises of 25 percent of metal. Metal is very common in nearly all aspects of life because of its abundance. Various metals have dissimilar properties and this is the reason for some being more useful than others. In general, a lot of strength and resilience is exhibited by metal. This strength makes them to find use in the building of high-rise structures and bridges.
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 several reasons why it is important to make alloys for use. One of these reasons is that metal in its pure form tends to be too brittle, soft, or chemically reactive to be put to any practical use. When different ratios of metals are combined, their properties are modified to achieve desirable characteristics. The reason why alloys are made is to make them harder, corrosion resistant, and less brittle.
The color or luster of alloys is also more desirable than that of a pure metal. Iron alloys are very many and they are the most commonly used even though others exist too. Abundance is measured by quantity and usage. Common alloys of iron include cast iron, carbon steel, alloy steel, stainless and tool steel are some of the regular alloys of iron.
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