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solder replacement adhesives

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Lucas-Milhaupt Silvaloy® B72 Brazing Alloy  (discontinued **)
Categories: Metal; Nonferrous Metal; Precious Metal; Silver Alloy; Solder/Braze Alloy

Material Notes: Silvaloy B72 is the eutectic composition of the silver-copper system. It is suitable for use in controlled atmosphere brazing without the use of a paste flux. When molten, it is very fluid and may flow out over the work surfaces during some furnace brazing applications. The wetting action on ferrous metals is limited, minimizing its use on carbon steel. Improved wetting is observed when furnace brazing of stainless steel with silver-copper filler metals. Most applications for this alloys are on copper and nickel base alloys. Typical applications are the joining of ferrous, nonferrous, and dissimilar metals and alloys with close joint clearances.

Information provided by Lucas-Milhaupt Warwick, LLC (formerly Wolverine Joining Technologies).

Key Words: AWS BAg-8
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Physical PropertiesOriginal ValueComments
Specific Gravity 9.06 g/cc
Density 0.360 lb/in³
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 0.00000200 ohm-cm
 
Thermal PropertiesOriginal ValueComments
Melting Point 1435 °F
Solidus 1435 °F
Liquidus 1435 °F
Maximum Service Temperature, Air 400 °Fcontinuous
 600 °Fintermittent
 
Processing PropertiesOriginal ValueComments
Processing Temperature 1435 - 1650 °FBrazing Temperature
 
Component Elements PropertiesOriginal ValueComments
Copper, Cu 26.85 - 29 %As balance
Other, total <= 0.15 %
Silver, Ag 71 - 73 %
 
Descriptive Properties
ColorWhite
Electrical Conductivity (% IACS)87

**
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NBRW046 / 79822

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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