Lucas-Milhaupt FOS FLO 7 Copper Phosphorus Alloy

Subcategory: Copper Alloy; Nonferrous Metal; Solder/Braze Alloy

Material Notes:

Applications:Fos-Flo 7 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.

Characteristics:Fos-Flo 7 is a copper rich, intermediate temperature, brazing filler metal that is free flowing and self-fluxing on copper by virtue of its phosphorus content. This alloy is extremely fluid when heated rapidly to its flow point and will penetrate joints with very little clearance. Best results are obtained with joint clearances of .001-.003 in.

Fos-Flo 7 liquates (i.e. separates into high and low melting constituents) if heated slowly through its melting range.

The self-fluxing property of Fos-Flo 7 is effective on copper only. Copper base alloys, such as brass or bronze, may be brazed with Fos-Flo 7 if the joints are coated with Handy Flux. Fos-Flo 7 should not be used on ferrous metals or nickel base alloys, since the phosphorus produces brittle iron or nickel phosphides at the joint interface.

Specifications:This filler metal conforms to the following specifications- AWS A5.8 BCuP-2, ASME Boiler & Pressure Vessel Code Sec. II-C, SFA5.8 BCuP-2

Information provided by Lucas-Milhaupt, Inc.