Which statement best describes case hardening?

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Prepare for the ASA Aviation Maintenance Technician General Test. Utilize flashcards and multiple-choice questions with hints and explanations. Ace your exam!

Multiple Choice

Which statement best describes case hardening?

Explanation:
Case hardening is about hardening only the outer layer by diffusing alloying elements into the surface, typically carbon (carburizing) or nitrogen (nitriding). This creates a hard, wear-resistant surface while the inner material remains relatively softer and tougher to absorb impact. The statement that best matches this describes surface hardening by diffusion of carbon or nitrogen and leaves the interior strong. It’s about a hard exterior with a strong, still-yielding core, not about hardening the whole piece or only the interior.

Case hardening is about hardening only the outer layer by diffusing alloying elements into the surface, typically carbon (carburizing) or nitrogen (nitriding). This creates a hard, wear-resistant surface while the inner material remains relatively softer and tougher to absorb impact. The statement that best matches this describes surface hardening by diffusion of carbon or nitrogen and leaves the interior strong. It’s about a hard exterior with a strong, still-yielding core, not about hardening the whole piece or only the interior.

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