Apple Interview Question: If you plot a Stress-Strain c... | Glassdoor

Interview Question

Product Design Engineer Interview Cupertino, CA

If you plot a Stress-Strain curve on top of each other. How

  would Annealed, Aluminum and Hardened steel compared? Yield Strength, Modulus of Elasticity and Ultimate Strength
Answer

Interview Answer

1 Answer

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Aluminum has lowest young's modulus (slope), yield strength and ultimate strength.

Annealed steel is softened and more ductile than normal steel, having uniform and stable microstructure , thus it has higher modulus and yield strength than Aluminum but lower than hardened steel .

Hardened steel has highest young's modulus and yield/ultimate strength, but is least ductile (strain at fracture is lowest among the 3 material).

Anonymous on Sep 20, 2017

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