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

Prepare for the NOCTI HVAC Test. Study with flashcards and multiple choice questions, complete with hints and explanations. Ace your exam with confidence!

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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