Question

Difference between Metals and alloys​

Answer 1

Metal is a material that has metallic properties whereas alloy is a substance which has two or more components mixed with metal. Hence, this is the basic difference between metal and alloy. ... Therefore, metal is a natural substance while alloy is a man-made substance

ALLOYS - .Alloy is a substance that has two or more components mixed with metal. Therefore, it also has metallic properties. Also, an alloy can have either a fixed composition or variable compositions. Looking at the purpose, we make alloys in order to enhance the existing properties of a metal or to provide the metal with new properties. Mostly, the aim of producing alloys is to make them less brittle, harder, resistant to corrosion, or have more desirable colour and lustre. Moreover, it is possible to change the properties of an alloy to suit one’s requirements by varying the additives or alloying materials.

The word alloying has come to refer to the process that leads to the formation of alloys. For centuries, people used iron, thinking it to be very strong. But, it was the formation of steel; its alloy, that gave the world one of the strongest structural materials. Also, there are two major types of alloy as substitutional alloys and interstitial alloys.

Key Difference Between Metal and Alloy

Figure 02: Different types of Alloys

Looking at the example of steel; it is an alloy that consists of mostly iron and a little bit of carbon, whose percentage varies from 0.2% to 2% depending upon the grade of alloy. We are aware of the strength and durability of steel, which is much more than iron which is softer than steel. Therefore, it is clear that by alloying, we can get better materials, and importantly, with properties other than those of the ingredients of the alloy. Furthermore, iron is one metal that makes many alloys other than steel with substances such as manganese, chromium, vanadium, and tungsten etc.

METALS - Metal is a material that has metallic properties. That means, metals have a lustre and are good conductors of heat and electricity. Furthermore, if we polish the surface, they are also good reflectors of light. Also, most of the metals are ductile and malleable. Moreover, they are denser than the non-metals. Most of the times, these materials have higher densities and melting and boiling points. The malleability and ductility of metals enable them to deform under stress without cleaving.

Difference Between Metal and Alloy

Figure 01: Iron is an Important Metal

Besides, there are three major crystal structures that metal can have;

Body-centred cubic structure

Face-centred cubic structure

Hexagonal closely packed structure

Above all these, the metals tend to form cations. They form cations via losing electrons from their outermost atomic orbitals. Hence, most of the metals can form oxides with the reaction with oxygen in normal air. However, there are some metals that do not react with air at all due to their high stability.

Answer 2

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Metals

1)A metal is a pure substance as it is made up of a single type of molecules. On the other hand, an alloy is made up of two or more substances.

2)Pure metals are found in nature, whereas alloys are man made.

alloys

2)Alloy is obtained by adding small percentages of other metal or non metals to a metal to have desirable properties.

4)Alloys don’t easily react with air and water like constituent metals. This is why car wheels are made up of alloys, and not pure metals

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