Bismuth solder

Anybody ever use bismuth solder ?

From Wikipedia's article on Soldering:

"Other common solders include low-temperature formulations (often containing bismuth), which are often used to join previously-soldered assemblies without un-soldering earlier connections, and high-temperature formulations (usually containing silver) which are used for high-temperature operation or for first assembly of items which must not become unsoldered during subsequent operations. ..."

Heres a link to solders with various melting temperatures listed.

http://www.grainger.com/Grainger/sol...temsPerPage=60

With the price of silver, most are keeping the percentage very low. I think Bismuth is used mainly in electrical solders.

Okay, here is a bismuth plumbing solder BUT it has the lowest melting temp, about 400 degrees compared to others in my first link.

http://www.antonline.com/p_29025-GP_590304.htm?sID=GP

Use pex.