SilverAlloy BV-68


INTRODUCTION

Aufhauser SilverAlloy BV-68 is a special alloy (very low level of impurities) for vacuum brazing.

APPLICATIONS

Use Aufhauser SilverAlloy BV-68 on ferrous and non-ferrous alloys. Because of its low vapor pressure SilverAlloy BV-68 performs excellently in vacuum applications. For example: in the assembly of electronic valves and vacuum tubes. Use it also when brazing metallized ceramics to nickel-cobalt-iron assemblies or joining glass to metal seals.

GENERAL INFORMATION

Chemical Composition, Grade 1 (Grade 2)
Ag Cu Pd Zn Cd Pb P C
67-69 26-28 4.5-5.5 < 0.001
(< 0.002)
< 0.001
(< 0.002)
< 0.002
(< 0.002)
< 0.002
(< 0.02)
< 0.005
(< 0.005)

All other metallic impurities having a vapor pressure higher than 10-7mm Hg at 500°C are limited to 0.002% each. Impurities having a vapor pressure lower than 10-7mm Hg at 500°C are limited to a total of 0.075%. (This applies to all forms except powder and extrudable paste.)

ADDITIONAL INFORMATION

Aufhauser SilverAlloy BV-68 has excellent corrosion and oxidation resistance, compared to other silver-copper alloys.

PHYSICAL and MECHANICAL PROPERTIES
Solidus (Melting point) 1461°F (794°C)
Liquidus (Flow point) 1497°F (814°C)
Brazing Range 1490-1650°F (809-899°C)
Density 9.98 g/cm³ (5.26 TO/in³)
Color Silver White
Electrical Conductivity 48.3 %IACS
Electrical Resistivity 3.57 μohm-cm
Vapor pressure (calculated) @ 700°C 1.3×10-6mm Hg
 
SPECIFICATIONS MEET or EXCEED
AWS A5.8 BVAg-30 (ISO 9002)
 
AVAILABLE FORMS
Powder/Paste
Wire, Rods*, Foil
Specialty preforms per customer specifications
 
*STANDARD SIZES AND DIAMETERS
Diameters: 1/32", 3/64", 1/16", 3/32", 1/8"
Sizes: 1, 3, 5, or 50 troy ounces
 

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  • Address:
    Aufhauser Corporation
    39 West Mall, Plainview, NY 11803 USA

  • Phone: +1-212-246-0205

  • Email: sales @ brazing.com

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