Silver-colored Copper Solder Paste Soft (1/2 Troy Ounce) Melting point: 1240 - Flow point: 1325F Each syringe contains 1/2 Troy Ounce of Copper Solder mixed with Flux Note* Copper Solder Paste is not actually Copper in color. Less bright than silver solder, so it blends in well with Copper, making it an excellent choice It is also cadmium free. Soft Copper Solder - Flow point: 1325F