Phoscopper 0


Phoscopper 0 is a low cost brazing filler metal suitable for joining copper to copper and copper to copper alloys where critical impact or vibration stresses are not encountered in service. It should only be used on assemblies where good fitup can be maintained. Application assemblies include heat exchanger return bends, hot water cylinders and refrigeration points.

Available Forms

Wire, engineered preforms, specialty preforms per customer specification, powder and paste


PC0 is a copper rich, intermediate temperature, brazing filler metal that is moderately free flowing and self-fluxing on copper (only) by virtue of its phosphorus content. It liquates slightly more than a 7% Phosphorus Copper when heated rapidly. Induction Brazing will produce better mechanical properties in general than torch brazing. Best results are obtained with joint clearances of .001-.003”. PC0 liquates (i.e. separates into high and low melting constituents) if heated slowly through its melting range. The self-fluxing property of PC0 is effective on copper only. Copper base alloys, such as brass or bronze, may be brazed with PC0 if the joints are coated with flux (please call for recommended flux type). PC0 should not be used on ferrous metals or nickel base allows, since the phosphorus produces brittle iron or nickel phosphides at the joint interface.


The properties of a brazed joint are dependent upon numerous factors including base metal properties, joint design, metallurgical interaction between the base metal and the filler metal. Joints made with PC0 are entirely satisfactory on copper and copper alloys if good fit-up and adequate shear area are maintained. If poor fit-up prevails, or shear area is marginal, a lower phosphorus content silver-copper-phosphorus filler metal may be preferred, particularly if the joints are to be subjected to impact or vibration in service.


American Welding Society (AWS)



1310 F / 710 C


1460 F / 793 C


The information and recommendations contained in this publication have been provided without charge & compiled from sources believed to be reliable and to represent the best information available on the subject at the time of issue. No warranty, guarantee, or representation is made by the Prince and Izant Company, Inc. as to the absolute correctness or sufficiency of any representation contained in this and other publications; Prince and Izant Company, Inc. assumes no responsibility in connection therewith; nor can it be assumed that all acceptable safety measures are contained in this (and other publications, or that other or additional measures may not be required under particular or exceptional conditions or circumstances.

Phoscopper 0 AWS: BCuP-2

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