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hardness is defined as a resistance to plastic deformation or penatration.Hardness is defined as the ease with which hardness may be attained by quenching . It is also defined as the ability to develop maximum hardness by quenching.It is the process to have a hardened layer of marten site after quenching and also to have high hardness at same given depth.

The material which having low critical cooling rate have high hardenability.The factors which reduce critical cooling rate increase the hardenability.alloy steels have low critical temperature.

In plain carbon steels are contain not more than .5% of silicon and 1.5% of manganese.These steels are strong,tough,ductile and used in expensive materials.Increase in hardness and strength in plain carbon steel is depend upon the presence of carbon content.

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11y ago
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14y ago

mild steel does not contain enough carbon to fully transform the austenite to martensite at quenching (hardening).

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Q: Why hardenability of plain carbon steel is less?
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What is Carbon steel and stainless steel?

Carbon steel is an iron alloy with less than 2% carbon, no chromium, and contains copper and magnesium not more than 0.6% Stainless steel is an iron alloy with less than 2% carbon and it contains chromium and it's resistive to corrosion


Is carbon steel an element'?

No, steel is a combination of Carbon and Iron. When referring to steel as "carbon steel" usually means the particular sample contains more carbon. This makes the steel harder but less flexible making it more liable to fracture.


Are carbon steel is the hardest thing in the world?

Diamonds are the hardest mateial we know of. Carbon steel is quite a lot less.


What material is better - stainless steel or carbon steel?

It depends on the applications. Stainless Steel is more corrosion resistant and more expensive. Carbon Steel is cheaper and less corrosion resistant.


What is Difference of plain carbon and alloy steels?

First this is wrong type of question, meaning that there is no such animal as non-alloy steel, just by the simplest definition of steel 'is an alloy of iron and carbon'.A more complex definition takes into account other elements which are added to steel such as Chromium (Cr), Nickel (Ni), Manganese (Mn) etc are just a few which are added to give certain properties after mechanical working and heat-treatment.


Will reducing carbon in steel increase malleability?

Yes. Carbon is added to iron in steel to make the steel stronger by making it more rigid. The more rigid a metal is, the less malleable it is.


What is stronger low carbon steel or high carbon steel?

The amount of carbon in iron metal determines the strength and type of steel.Steel with low carbon is called low carbon steel and carbon with medium carbon called medium carbon steel. It is called low carbon steel if the carbon content is around 2.5 % or less. Others may be called medium or high carbon steel like that used in Die Steel of cutting tools. Generally low carbon steel are preferred if welding is adopted.


What does the metal steel mainly consist of?

Iron. All alloy material is present in concentrations less that 5%


What is the chemical composition in dead soft steel?

It's the same as normal steel, (Iron and Carbon) it's just got much less carbon in it.


Iron and carbon combine to make what?

Wrought iron- less than 0.25% C Steel- 0.2%-2% of C


What is high carbon steels?

Steel is a mixture of iron with a small amount (typically less than 2%) of carbon. Increasing the amount of carbon makes high-carbon steel, which is harder and stronger, but more brittle.


What is differentiate between steel and Cast iron with reference to their carbon percentage and hardness?

iron with 1.5% of carbon by volume or less is called carbon steel and above 1.5% it is called cast iron, hardmess increases with the carbon % i.e. cast iron is harder than carbon steel