Brazing filler metal used for joining steel plates_________________?
Correct answer: D. Melts below the melting points of base metals
- A. Is copper
- B. Melts below 300°C
- C. Is copper phosphorous alloy
- D. Melts below the melting points of base metals
Explanation
In brazing, the filler metal melts and flows at a temperature below the melting points of the steel base plates. The filler is not required to melt below 300°C and need not be pure copper or a copper-phosphorus alloy.
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