SilverAlloy A-50Ni2


INTRODUCTION

Aufhauser SilverAlloy A-50Ni2 is a cadmium-free silver brazing alloy. Addition of nickel to the silver-copper zinc alloy imparts corrosion properties which retards joint or interface corrosion of the brazed assembly.

APPLICATIONS

SilverAlloy A-50Ni2 is a suitable replacement for the cadmium-containing BAg-3 alloy. Its low liquidus of 1305°F (707°C) reduces surface oxidation and sensitization to stainless steels. Typical applications are the joining of 300-series stainless steels in the food, medical, and dental fields. The nickel element in SilverAlloy A-50Ni2 also improves the bond strength when joining tungsten carbide cutting tips. SilverAlloy A-50Ni2 is used for joining most ferrous and non-ferrous metals except aluminum and magnesium. Good replacement for SilverAlloy 50N in carbide brazing.

GENERAL INFORMATION

Chemical Composition
Silver Copper Zinc Nickel
49.0-51.0 19.0-21.0 26.0-30.0 1.5-2.5

ADDITIONAL INFORMATION

Addition of nickel to the silver-copper zinc alloy imparts corrosion properties which retards joint or interface corrosion of the brazed assembly. The nickel element in SilverAlloy A-50Ni2 also improves bond strength when joining tungsten carbide cutting tips. SilverAlloy A-50Ni2 is a suitable replacement to the cadmium-containing SilverAlloy Cd-50Ni3 alloy. Its low liquidus of 1305°F reduces surface oxidation and sensitization to stainless steels.

Generally, the joint strength using SilverAlloy A-50Ni2 will surpass the strengths of the base metals. Strength is a function of the base metals being joined, type of joint, design of joint, joint clearances and brazing procedures. The recommended maximum operating temperature for SilverAlloy A-50Ni2 is up to 700°F (370°C).

PHYSICAL and MECHANICAL PROPERTIES
Solidus 1220°F (660°C)
Liquidus 1305°F (707°C)
Brazing Range 1310-1550°F
Specific Gravity 8.98
Density 4.73 TO/Cu.In
Electrical Conductivity 15 %IACS
Electrical Resistivity 11.75 μohm-cm
Color Light Yellow
 
SPECIFICATIONS MEET or EXCEED
AWS A5.8 BAg-24
ASME BAg-24
AMS 4788
ISO 3677: B Ag 50 Zn Cu Ni 660-750
 
STANDARD SIZES AND DIAMETERS
Diameters: 1/32", 3/64", 1/16", 3/32", 1/8"
Sizes: 1, 3, 5, or 50 troy ounce
 

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