A 50/50 solder is a combination of lead and which metal?

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Study for the NOCTI Heating, Ventilation, and Air Conditioning (HVAC) Test. Practice with flashcards and multiple choice questions, each question offers hints and explanations. Get ready for your exam!

Multiple Choice

A 50/50 solder is a combination of lead and which metal?

Explanation:
50/50 solder is a lead-tin alloy—half lead, half tin. Tin is the metal paired with lead to create a solder that melts at a relatively low temperature and wets copper surfaces well, which is essential for joining HVAC copper tubing reliably. Copper, zinc, and antimony aren’t part of this classic composition, though they show up in other solders.

50/50 solder is a lead-tin alloy—half lead, half tin. Tin is the metal paired with lead to create a solder that melts at a relatively low temperature and wets copper surfaces well, which is essential for joining HVAC copper tubing reliably. Copper, zinc, and antimony aren’t part of this classic composition, though they show up in other solders.

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