Phosphor bronze alloy is composed of____________________?
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Answer: E. none of the above
Explanation
Phosphor bronze is an alloy of copper tin and a very small trace of phosphorus. Standard phosphorus content typically ranges from zero point zero one to zero point three five percent. None of the high percentage values listed in the options match standard metallurgical compositions. Phosphorus acts as a deoxidizing agent during the casting of copper-tin bronze alloys. Alloying elements modify the mechanical strength corrosion resistance and wear properties of metals. Standard material specifications define strict compositional limits for commercial engineering alloys.
Phosphor bronze is widely used for electrical springs guitar strings and sleeve bearings. Mechanical engineers select this alloy for its excellent fatigue resistance and low friction. Precise alloy composition ensures reliable performance in demanding marine and electrical environments. High percentages like one or five percent phosphorus would cause severe brittleness in bronze. Trace additions are sufficient to achieve the desired deoxidation and grain structure benefits. Standard metallurgical handbooks confirm that listed high percentage options are incorrect.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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