Thread: why 60-40 solder?
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William Sommerwerck William Sommerwerck is offline
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Default why 60-40 solder?
wrote:

why is 63-37 eutectic solder not universally preferred?

Because you can't sell it in the EU if it's got lead in it.

Uh... 63-37 has lead in it.

The 63 is tin, the 37 lead. Traditionally, tin has been more expensive than
lead, so eutectic solder cost more than 60-40.


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