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GATE 2016 ME (ME1) – Question 30

Engineering Materials · Phase diagrams and heat treatment · 1 mark · Multiple choice

The “Jominy test” is used to find

  1. Young’s modulus
  2. hardenability
  3. yield strength
  4. thermal conductivity

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Show answer and explanation

Correct answer: (B) hardenability

Explanation

The Jominy end-quench test cools one end of a heated steel specimen and measures hardness at increasing distances from the quenched end. The resulting hardness profile shows how deeply hardening can develop under different cooling rates. It measures **hardenability, B**, rather than simply one hardness value or Young’s modulus.