- Solders with different ratios of tin to lead have different melting points.metal image by Kirill Zdorov from Fotolia.com
Solder is usually composed in a ratio of tin to lead. Each composition has a different melting temperature. - Solder containing the least tin has the highest melting point.fireball image by hugy from Fotolia.com
The lowest tin solder is 40 percent tin and 60 percent lead and melts at 460 degrees Fahrenheit (230 degrees Celsius). Solder with a ratio of tin to lead of 50/50, melts at 418 degrees Fahrenheit (214 degrees Celsius); and for 95/5 solder, the melting point is 434 Degrees Fahrenheit (224 degrees Celsius). - Soldering is used extensively in making circuit boards.board image by martini from Fotolia.com
The most common solders used in electronic applications are 60/40, with a melting point of 374 degrees Fahrenheit (190 degrees Celsius), and 63/37, with a melting point of 364 degrees Fahrenheit (184 degrees Celsius). - Quality soldering tips provide effective thermal conductivity.soldering woodburning kit image by Steve Johnson from Fotolia.com
The tip of a soldering gun should be made of copper or another metal that has excellent thermal conductivity, such as nickel plate over copper. This enables the heat to transfer to the solder quickly and efficiently, allowing a more effective bond.
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