Why can’t you solder copper parts with steel solder?
January 26, 2021
When brazing, it is important that the melting point of the solder is lower than the melting point of the parts. The melting point of steel is higher than the melting point of copper, so if you try to solder copper parts to each other with steel solder, the parts to be joined in contact with such solder will melt themselves at the soldering points.
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