SilverAlloy BV-61


INTRODUCTION

Aufhauser SilverAlloy BV-61 is a special alloy (very low level of impurities) for vacuum brazing.

APPLICATIONS

Application is found in all types of moderate temperature low pressure systems, and in particular the electronic vacuum tube.

GENERAL INFORMATION

Chemical Composition, Grade 1 (Grade 2)
Ag Cu In Zn Cd Pb P C
60.5-62.5 23-25 14-15 < 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-61 has excellent corrosion and oxidation resistance, compared to other silver-copper alloys.

PHYSICAL and MECHANICAL PROPERTIES
Solidus (Melting point) 1166°F (630°C)
Liquidus (Flow point) 1301°F (705°C)
Brazing Range 1310-1455°F (710-790°C)
Density 9.81 g/cm³ (5.19 TO/in³)
Thermal expansion coefficient @ 20-500°C 18.5 10-6/°C
Yield strength (0.2% offset), lb/in² 56×103
Tensile strength, lb/in² 65×103
Elongation (2 in/50mm gauge section) 19%
Color Silver White
Electrical Conductivity 16.0 %IACS
Electrical Resistivity 10.7 μohm-cm
Vapor pressure (calculated) @ 600°C 1.7×10-7mm Hg
 
SPECIFICATIONS MEET or EXCEED
AWS A5.8 BVAg-29 (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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    Aufhauser Corporation
    39 West Mall, Plainview, NY 11803 USA

  • Phone: +1-212-246-0205

  • Email: sales @ brazing.com

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