60/40 vs 80/20 vs lead free

[Rocky213 10+ year member]

whats the best solder to use for power wire and smaller gauge speaker wire..i have lead free at the moment because its the most expensive so i figured it was the best..but ive seen people use more 60/40 and 80/20..

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[Rocky213 10+ year member]

bump...

 

[phunky.buddha 10+ year member]

60/40. Lead free = tin whiskers, more brittle, less reliability, requires higher temp soldering iron to flow properly.