What are the limitations of Plain Carbon Steel?

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written 6.3 years ago by

atharvinamdar • 830

modified 5.2 years ago by

sanketshingote • 100

Mild steel which is very commonly used steel for various application consists only 0.05 to 0.32% carbon content.
It is relatively cheap and easy to handle and easy to use for fabrication purpose.
Though it has some limitations which are as follows:

There cannot be strengthening beyond about 100000 psi without significant loss in toughness (impact resistance) and ductility.
Large sections cannot be made with a martensite structure throughout, and thus are not deep hardenable.
Rapid quench rates are necessary for full hardening in medium-carbon leads to shape distortion and cracking of heat-treated steels.
Plain-carbon steels have poor impact resistance at low temperatures. They have poor corrosion resistance for engineering problems.
Plain-carbon steel oxidizes readily at elevated temperatures.

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