Element alloyed with iron for heat-resistant, hard steel — UPSC Prelims PYQ...
Which one of the following elements is alloyed with iron to produce steel which can resist high temperatures and also have high hardness and abrasion resistance?
- Aluminium
- Chromium
- Nickel
- Tungsten
Explanation
Option (d) is correct
- Tungsten steel (high-speed steel) is known for its ability to withstand very high temperatures, high hardness, and abrasion resistance. It is used in cutting tools. Chromium improves corrosion resistance, but tungsten provides superior heat resistance and hardness.
Answer: (d) Tungsten
