Lead is added to 60:40 brass primarily to improve_________________?
Correct answer: A. Machinability
- A. Machinability
- B. Corrosion resistance
- C. Fluidity
- D. Strength
Explanation
Lead forms a soft, discontinuous phase in brass that breaks chips and provides lubrication at the cutting tool. Its main purpose in 60:40 brass is therefore to improve machinability.
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