ISRO Mechanical & Aerospace 2020 - Question 75

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Which spring steel is widely used for aircraft engine valves

  • A. Oil tempered wire (0.6 C to 0.7 C)
  • B. Chrome vanadium
  • C. Hard drawn wire (0.6 C to 0.7 C)
  • D. Phosphor bronze wire

Answer: B. Chrome vanadium

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