Difficulty: Easy
Correct Answer: 0.20 to 0.25
Explanation:
Reference values
Typical exponent n by tool material: HSS ≈ 0.08–0.20; Carbide ≈ 0.20–0.25; Ceramics ≈ 0.4–0.55. Hence the correct band for carbides is 0.20–0.25.
Final Answer
0.20 to 0.25.
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