Aufhauser SilverAlloy A-54N is a silver brazing alloy suitable for furnace brazing due to its low zinc content. Its broader melting range (250°F) is helpful where clearances are not uniform. During melting, SilverAlloy A-54N passes from the solid state to a mushy or plastic state and progressively to a liquid. If heated slowly through this plastic state (1325-1575°F) the liquid portion may flow from the solid portion. This causes a separation of the alloy into a low-temperature melting (fluid) portion and a high-temperature melting (solid) portion. This phenomenon is called liquation. The high temperature melting portion will melt only above the normal brazing temperature of SilverAlloy A-54N. For this reason, SilverAlloy A-54N should be heated rapidly through the melting range.

APPLICATIONS

Typical applications for SilverAlloy A-54N are the joining of ferrous, non-ferrous and dissimilar metals and alloys, except aluminum and magnesium.

GENERAL INFORMATION

ADDITIONAL INFORMATION

During melting, SilverAlloy A-54N passes from the solid state to a mushy or plastic state and progressively to a liquid. If heated slowly through this plastic state (1325-1575 °F) the liquid portion may flow from the solid portion. This causes a separation of the alloy into a low temperature melting (solid) portion. This phenomenon is called liquation. The high temperature melting portion will melt only above the normal brazing temperature of SilverAlloy A-54N. For this reason, SilverAlloy A-54N should be heated rapidly through the melting range.

Generally, the joint strength using SilverAlloy A-54N 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-54N is up to 700°F (370°C).