When assembling, start with your highest melting point solder. As you assemble each piece, use a lower temperature solder. The chart below describes the uses for and flow temperatures of four standard types of solder.
|Solder||Flow Points||Use for|
|Extra-hard||1490°F/810°C||Laser welding, repair operations|
|Hard||1450°F/788°C||First soldering operations|
|Easy||1325°F/719°C||General soldering and repairs;|
intermediate or final operations