In case of brasses, with decreasing zinc percentage and increasing copper percentage, its _____________ increases ?
Correct answer: A. Percentage elongation
- A. Percentage elongation
- B. Brinell hardness
- C. Tensile strength
- D. All A, B & C
Explanation
Reducing zinc and increasing copper changes brass toward a more ductile, copper-rich composition, so percentage elongation increases. Higher zinc contents generally increase strength and hardness but reduce ductility.
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