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solder replacement adhesives

Lucas-Milhaupt SILVALOY® 604 VTG Grade 1 (BRAZE™ 604 VTG, SILVALOY® B60TV) Copper Silver Tin Brazing Filler Metal (AWS BVAg-18 Grade 1)
Categories: Metal; Nonferrous Metal; Precious Metal; Silver Alloy; Solder/Braze Alloy

Material Notes: Silvaloy 604 (VTG) Grade 1 is a silver base braze filler metal used in making of low temperature seals in vacuum tube components. This product is often used in brazing of ferrous and non-ferrous alloys in a controlled atmosphere or vacuum furnace applications without the use of flux. Silvaloy 604 (VTG) is recommended for brazing of heat exchanges exposed to salt water in marine environment. Salt water exposure may cause dezincification in braze alloys containing zinc, particularly in joints involving copper-nickel tubing. Silvaloy 604 (VTG) is a low temperature, low vapor pressure braze filler metal formulated to meet the need for a composition free from volatile constituents, particularly essential in the brazing of vacuum tubes. Silvaloy 603 can be used where low volatiles is not a requirement. Silvaloy 604 (VTG) filler metal can be used successfully to braze in hydrogen atmospheres without the use of flux. The tin content of this filler metal improves its wetting characteristics on ferrous base alloys over in comparison to binary silver copper braze filler metals.

Available forms: Wire, strip, engineered preforms, specialty preforms, powder and paste.

Information provided by Lucas-Milhaupt.

Key Words: AMS 4773; Fed QQ-B-654 BAg-18
Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesMetricEnglishComments
Specific Gravity 9.58 g/cc9.58 g/cc
Density 9.58 g/cc0.346 lb/in³
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.0000241 ohm-cm0.0000241 ohm-cm7.1% IACS
 
Thermal PropertiesMetricEnglishComments
Melting Point 601.7 - 718.3 °C1115 - 1325 °F
Solidus 601.7 °C1115 °F
Liquidus 718.3 °C1325 °F
 
Processing PropertiesMetricEnglishComments
Processing Temperature 718.3 - 843 °C1325 - 1550 °FBrazing Range
 
Component Elements PropertiesMetricEnglishComments
Cadmium, Cd <= 0.0010 %<= 0.0010 %
Carbon, C <= 0.0050 %<= 0.0050 %
Copper, Cu 28.47 - 31.47 %28.47 - 31.47 %Remainder
Lead, Pb <= 0.0020 %<= 0.0020 %
Other, each <= 0.0010 %<= 0.0010 %High vapor pressure elements.
Other, total <= 0.010 %<= 0.010 %high vapor pressure elements (Including zinc, cadmium, and lead)
 <= 0.010 %<= 0.010 %Impurity elements
Phosphorus, P <= 0.0020 %<= 0.0020 %
Silver, Ag 59 - 61 %59 - 61 %
Tin, Sn 9.5 - 10.5 %9.5 - 10.5 %
Zinc, Zn <= 0.0010 %<= 0.0010 %
 
Descriptive Properties
ColorWhite

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NLUCM9842 / 254787

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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