Question

The carbon content in steel is:
A.0.1 - 5.0\,{\text{% }}
B.2.0 - 2.5{\text{% }}
C.0.1 - 1.5{\text{% }}
D.Less than $0.1$

Answer 1

The carbon content in steel is not very high. Approximately ninety six percent of iron is present in steel and there are other trace elements present steel. The content of carbon is more than $0.1$.

Complete step by step solution:
Steel is an alloy. An alloy is formed by mixing of 2 or more than 2 metals. They are also known as solid solutions. It is widely used because of its low cost and high tensile strength.
Carbon steel is steel that contains a certain amount of carbon. However steel is generally made of iron and the major component of steel is also an iron that constitutes $96\%$ of iron. Trace elements such as chromium, Cobalt, molybdenum, nickel, chromium, titanium, tungsten, vanadium in steel. They are present in very less quantities, that is why they are called trace elements and no minimum amount is specified for them in steel. However the maximum amount has a certain limit to not exceed. The carbon present in steel ranges between 0.1 - 1.5{\text{% }}
Carbon steel is used for many purposes such as milling machines, cutting tools and to make the wires that have high tensile strength. As we increase the amount of carbon in the Steel it becomes harder and stronger by treating it with heat. Increasing the carbon content decreases the ductility of the Steel.

Hence, the correct option is option C.

Note: AISI American iron and steel institute have classified the carbon Steel into four classes based upon the content of carbon. They are known as low carbon Steel, medium carbon steel, high carbon steel and ultra high carbon Steel with carbon content in increasing order.