Tungsten 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)
Tungsten is an important alloying element in steel, especially in high-speed tool steels.Effect on properties: It forms very hard and stable carbides (tungsten carbides) that greatly enhance the wear resistance of the steel.
Cutting ability: Tungsten maintains hardness even at elevated temperatures (red hardness), which significantly improves the cutting ability of tools.
Toughness: Addition of tungsten also contributes to improved toughness of the steel, making it suitable for high-stress applications.
Conclusion: Therefore, tungsten in steel mainly improves wear resistance, cutting ability and toughness.
This Question Belongs to Mechanical Engineering >> Engineering Materials
C