2nd October 2019

wikipedia
15

What is hard soldering used for?

"Hard soldering" or "silver soldering" is used to join precious and semi-precious metals such as gold, silver, brass, and copper. The solder is usually described as easy, medium, or hard in reference to its melting temperature, not the strength of the joint.

Also to know is, what is the melting point of 15% silver solder?

Phosphorus acts as a fluxing agent when joining copper to copper.
Silver: 15%
Temperature: melt 1190°F, flow 1475°F.
Worthington Industries 15% Silver Brazing Rod.
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