Question

Case carburizing is the most widely used technique for case hardening of steel parts with

• A. Low carbon content
• B. High carbon content
• C. High Hardness
• D. High electrical resistance

Hint:

Carburizing "adds" carbon. You only need to add carbon if the original steel is low in carbon.

Answer 1

The Correct Option is A

Step 1: Concept Carburizing is a thermochemical process that diffuses carbon into the surface layer of a steel component.

Step 2: Meaning This process is used to create a hard, wear-resistant surface while maintaining a tough, ductile core.

Step 3: Analysis High-carbon steels are already hardenable throughout. Case carburizing is specifically intended for low-carbon steels (typically 0.1% to 0.25% C) that otherwise would not achieve high surface hardness through standard quenching.

Step 4: Conclusion Thus, case carburizing is primarily applied to steel parts with low carbon content. Final Answer: (A)