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Lucas-Milhaupt SIL-FOS 6 Silver/ Copper/ Phosphorus Alloy

Category Metal , Nonferrous Metal , Copper Alloy , Solder/Braze Alloy
Manufacturer Lucas-Milhaupt
Trade Name SIL-FOS
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Lucas-Milhaupt SIL-FOS 6 Silver/ Copper/ Phosphorus Alloy.pdf
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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.
Physical Properties Metric English Comments
Density 7.86 g/cc
0.284 lb/in³
Thermal Properties Metric English Comments
Melting Point 640.6 - 718.3 °C
1185 - 1325 °F
Solidus 640.6 °C
1185 °F
Melting Point
Liquidus 718.3 °C
1325 °F
Flow Point
Component Elements Properties Metric English Comments
Copper, Cu >= 86.15 %
>= 86.15 %
Other, total <= 0.15 %
<= 0.15 %
Phosphorous, P 7.0 - 7.5 %
7.0 - 7.5 %
Silver, Ag 5.8 - 6.2 %
5.8 - 6.2 %
Electrical Properties Metric English Comments
Electrical Resistivity 0.0000219 ohm-cm
0.0000219 ohm-cm
Processing Properties Metric English Comments
Processing Temperature 690.6 - 788 °C
1275 - 1450 °F
Brazing Range
Descriptive Properties Value Comments
Color Gray
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