Chromium in steel

A. Improves wear resistance, cutting ability and toughness

B. Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties

C. Improves cutting ability and reduces hardenability

D. Gives ductility, toughness, tensile strength and anti-corrosion properties

Answer: Option A

Solution(By Examveda Team)

Chromium in steel Increases strength, hardness, hardenability, and toughness, as well as creep resistance and strength at elevated temperatures.
It improves machinability and resistance to corrosion and it intensifies the effects of other alloying elements.
In hot-work steels and high speed steels, it increases red-hardness properties.