-2
\$\begingroup\$

Which low temperature (< 350°C) solder can be used to solder a ring? So non toxic in direct constant contact with skin and overall in domestic environment?

\$\endgroup\$

closed as off-topic by Leon Heller, The Photon, user3624, JIm Dearden, JYelton Aug 2 '13 at 20:45

  • This question does not appear to be about electronics design within the scope defined in the help center.
If this question can be reworded to fit the rules in the help center, please edit the question.

  • 1
    \$\begingroup\$ What is the ring made of? \$\endgroup\$ – Reinstate Monica Aug 2 '13 at 18:50
  • 4
    \$\begingroup\$ This question appears to be off-topic because it is not about electronic design. \$\endgroup\$ – Leon Heller Aug 2 '13 at 19:19
  • \$\begingroup\$ @Justin: Cu or Ag \$\endgroup\$ – tig Aug 3 '13 at 2:49
2
\$\begingroup\$

Au/Sn solder should do it. Available at http://www.indium.com/products/

The eutectic point is 536 deg F, or 280 deg C. I can't vouch for the biocompatibility for permanent skin contact. The best source for that would likely be with the compliance officer for whatever standard you're trying to hit, or maybe a phone call to the Indium Corporation.

\$\endgroup\$

Not the answer you're looking for? Browse other questions tagged or ask your own question.