Which of the following factors do not affect the critical cooling rate? Options: A . &nbspChemical composition B . &nbspHardening temperature C . &nbspNumber or nature of grains D . &nbspPurity of steel

Which of the following factors do not affect the critical cooling rate?

Question - Which of the following factors do not affect the critical cooling rate?

Options:

A . Chemical composition

B . Hardening temperature

C . Number or nature of grains

D . Purity of steel

Answer: Option C
Answer: (c).Number or nature of grains

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