Martensitic steels are known for having high yield-to-tensile strength ratios. This means that they can withstand high amounts of stress before permanently deforming. Unlike mild steels, which fall into the lower strength range, martensitic steels are harder and stronger due to their specific microstructure formed during heat treatment.
Additionally, martensitic steels are not very ductile compared to other types of steels. Ductility refers to the ability of a material to deform plastically before fracturing. Since martensitic steels are hardened through heat treatment, they tend to be less ductile and more prone to fracturing under tensile stress.
Therefore, the correct statement regarding martensitic steels from the options provided would be:
- O d. have high yield-to-tensile strength ratios.
