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solder replacement adhesives

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Lucas-Milhaupt SIL-FOS® 6 Silver/ Copper/ Phosphorus Alloy
Categories: Metal; Nonferrous Metal; Copper Alloy; Solder/Braze Alloy

Material Notes:

Applications: Sil-Fos 6 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:Sil-Fos 6 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.

Sil-Fos 6 liquates (i.e. separates into high and low melting constituents) if heated slowly through its melting range.

The self-fluxing property of Sil-Fos 6 is effective on copper only. Copper base alloys, such as brass or bronze, may be brazed with Sil-Fos 6 if the joints are coated with Handy Flux. Sil-Fos 6 should not be used on ferrous metals or nickel base alloys, since the phosphorus produces brittle iron or nickel phosphorus at the joint interface.

Specifications:This alloy conforms to the following specifications: AWS A5.8 BCuP-4, ASME Boiler & Pressure Vessel Code, Sec.II-C, SFA5.8 BCuP-4

Information provided by Lucas-Milhaupt, Inc.

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Physical PropertiesOriginal ValueComments
Density 0.284 lb/in³
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 0.0000219 ohm-cm
 
Thermal PropertiesOriginal ValueComments
Melting Point 1185 - 1325 °F
Solidus 1185 °FMelting Point
Liquidus 1325 °FFlow Point
 
Processing PropertiesOriginal ValueComments
Processing Temperature 1275 - 1450 °FBrazing Range
 
Component Elements PropertiesOriginal ValueComments
Copper, Cu >= 86.15 %
Other, total <= 0.15 %
Phosphorus, P 7.0 - 7.5 %
Silver, Ag 5.8 - 6.2 %
 
Descriptive Properties
ColorGray

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NLUCMI51 / 18118

Solder Replacement
RoHS Compliant Adhesives for Solder Replacement
Master Bond offers RoHS compliant, electrically conductive systems to replace lead soldering. These epoxy and silicone adhesives offer low volume resistivity, low outgassing and high temperature resistance.

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