Which of the following is high speed steel?

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Mr. Dubey

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📊 Metallurgy

Q. Which of the following is high speed steel?

(A) T 55 Ni Cr 65 Mo 30
(B) T 75 W 18 Co 6 Cr 4
(C) T 10 Cr 5 Mo 75 V 23
(D) T 75 W 18 Co 6 Cr 4 V 1 Mo 75

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✅ Correct Answer: (D) T 75 W 18 Co 6 Cr 4 V 1 Mo 75

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