what is lead free solder?

[Brownie]

can anyone tell me if lead free solder is made of tin or what is it?

:???:

[imashooter2]

Generally 95% tin and then 5% "other" (silver, copper, antimony, more). In the quantites we use tin, the 5% becomes trace metal.

[Brownie]

thanks for the info.

[johnly]

thanks for the info.

The most common lead-free solder used in the electonics industry is SAC305

Tin 96.5%/ Silver 3.0% / Copper 0.5%

John

[JSnover]

For a short list of solders and contents, try page 3311 of McMaster-Carr's catalog (www.mcmaster.com). It's not the only site but they're pretty good about describing their products in laymans terms.
Better yet, shop around for a used copy of "The Machinery's Handbook."

[Brownie]

www.mcmaster.com
this site pretty much tells it all when it comes to solder.
thanks Guys