General Studies · Welding and Joining Processes
The typical composition of standard soft solder (eutectic solder) is:
- 1Lead 58% and tin 42%
- 2Lead 50% and tin 50%
- 3Lead 37% and tin 63%✓
- 4Lead 70% and tin 30%
Correct answer
Lead 37% and tin 63%
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