Select the correct statement related to increasing the carbon content in steel from 0.2 to 0.9 percent.
Carbon Content:- Compared to other ferrous and non-ferrous materials, carbon steels are widely used engineering materials. There are many types of carbon steels, each designed by the metallurgist, to have particular properties required by the engineer. Carbon steel is basically an alloy of iron and carbon-containing manganese (1.0% max); silicon (0.5% max); sulfur (0.04% max) and phosphorus (0.05% max).
As the carbon content increases:
The ultimate strength of steel increases.
The elongation before fracture decreases.
The ductility of the metal decreases.
Increasing carbon also reduces weldability, especially above 0.25% carbon.
Plasticity and ductility are similar.
Yield strength is an increase in steel so it becomes high yield strength steel.