[Metallurgical Products Company | Metprodco - Phosphor Copper - Phoscopper - Metal Alloys - Copper-Base Master Alloys, Phosphor Nickel Master Alloys and Specialty Metals Phosphor Copper, Copper-Base Master Alloy, Copper Alloy - Metallurgical Products Company is the leading source for copper-based master alloys (copper alloys) and phosphor nickel master alloys used by industries that do melting and casting.]