Broaching tools are usually made of____________________?
Correct answer: D. High speed steel
- A. Cermets
- B. Stellite
- C. Tungsten carbide
- D. High speed steel
Explanation
Broaching involves many cutting teeth and substantial wear, so broaches are commonly manufactured from high-speed steel, which retains hardness at elevated cutting temperatures. Carbides are used in some specialized tools but are more brittle and costly for general broaching.
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