Square steel key is normally strong in failure by shear & crushing. Keys are normally made of _______________ steel bars?
Correct answer: B. Cold rolled mild
- A. Hot rolled mild
- B. Cold rolled mild
- C. Forged
- D. Machinable stainless
Explanation
Keys are commonly made from cold-rolled mild steel because it provides adequate strength and a sound, uniform bar for resisting shear and crushing. Forged or machinable stainless steel is not the usual standard choice.
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