Solder Properties
These values are for some of the most common solders. With the push for lead-free (Pb-free) versions that conform the the RoHS1 initiative that will be in effect in Europe in the summer of 2006, new alloys have been developed that use little or no lead at all. For those application, this resource compiled by NIST2 and the Colorado School of Mines will be very helpful.
- How to Solder Various Metals: A handy set of tutorials from the Kester solder people.
- Database for Solder Properties with Emphasis on New Lead-Free Solders
| Solder Alloy | Melting Point (°C) | Melting Point (°F) |
| 5Sn-95Pb | 307 | 585 |
| 0.5Sn-92.5Pb-2.5Ag | 280 | 536 |
| Sn/5Sb | 243 | 469 |
| 100Sn | 232 | 450 |
| 99.3Sn-0.7Cu | 227 | 440 |
| 96.5Sn-3.5Ag | 221 | 430 |
| 52In-48Sn | 118 | 244 |
| Sn/3.0Ag/0.5Cu | 219 | 426 |
| Sn/3.8Ag/1.0Cu | 217 | 423 |
| Sn/3.5Ag/1.0Cu/3Bi | 213 | 415 |
| 50In-50Pb | 209 | 402 |
| 45Sn-55Pb | 204 | 400 |
| 55Sn-45Pb | 193 | 379 |
| 60Sn-40Pb | 186 | 368 |
| 63Sn-37Pb | 183 | 361 |
| 62Sn-36Pb-2Ag | 179 | 354 |
| 97In-3Ag | 143 | 289 |
| Sn/57Bi | 139 | 282 |
1: Reduction of Hazardous Substances
2: National Institute of Standards and Technology
Webmaster: Kirt Blattenberger, BSEE, UVM 1989