Solder and flux used for joining Elgiloy wires are_____________?
Correct answer: D. Silver solder and fluoride flux
- A. Gold solder and borax flux
- B. Gold solder and fluoride flux
- C. Silver Solder and borax flux
- D. Silver solder and fluoride flux
Explanation
Elgiloy is a cobalt-chromium alloy with a tenacious oxide layer, so silver solder is used with a fluoride flux to dissolve or disrupt those oxides. Borax flux is mainly suitable for noble-metal soldering and is ineffective for base-metal oxides.
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