Medium carbon steel is used where higher strength, hardness or increased wear resistance is needed.

Medium carbon steel is used where higher strength, hardness or increased wear resistance is needed.

• A. True
• B. False
• C. Not applicable
• D. Only with alloying

Answer: (A)

Medium carbon steel is chosen when higher strength and hardness, or better wear resistance, are required compared to low-carbon steel. Its carbon content allows it to be heat treated—quenched and tempered—to substantially increase hardness while maintaining reasonable toughness. This makes it ideal for parts like gears, shafts, and fasteners that must resist wear. While adding alloying elements can further boost wear resistance, it isn’t required to achieve the increased strength or hardness. Therefore the statement is true.

Medium carbon steel is chosen when higher strength and hardness, or better wear resistance, are required compared to low-carbon steel. Its carbon content allows it to be heat treated—quenched and tempered—to substantially increase hardness while maintaining reasonable toughness. This makes it ideal for parts like gears, shafts, and fasteners that must resist wear. While adding alloying elements can further boost wear resistance, it isn’t required to achieve the increased strength or hardness. Therefore the statement is true.