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Silver Braze 50Ni2

Silver Braze 50Ni2 Technical Data


Silver Braze 50Ni2 readily wets nickel and iron base alloys. It is recommended for joining 300 Series stainless steel and will retard interface corrosion in most exposures for which the base metals are suitable. However, for joints on cupro-nickel exposed to salt water at elevated temperatures, zinc-free alloys should be used to avoid joint failure by dezincification. Because this alloy is cadmium-free, it can be safely used on food handling equipment and hospital utensils. The presence of nickel in Silver Braze 50Ni2 aids in the joining of small tungsten carbide inserts in cutting tools. In addition, it offsets joint interface brittleness caused by diffusion of aluminum into the brazing alloy, when joining aluminum-bronze to steel.

Brazing Characteristics

Silver Braze 50Ni2 is very fluid at its flow point and will quickly fill long, narrow joints. Because it has the tendency to liquate (separation into low and high melting constituents) when heated slowly, this alloy should be heated quickly through its melting range. Its low flow point will minimize oxidation of the stainless steel during brazing. Flux is normally used.

Properties of Brazed Joints

The properties of a brazed joint are dependent upon numerous factors including base metal properties, joint design, metallurgical interaction between the base metal and the filler metal.


Silver Braze 50Ni2 conforms to American Welding Society (AWS) A5.8/A5.8M BAg-24 and Society of Automotive Engineers (SAE) AMS 4788

Available Forms

Wire, strip, engineered preforms, specialty preforms per customer specification, powder and paste.

Compare With

  • AMS: 4788
  • AWS: BAg-24
  • Lucas: Silvaloy 505
  • PI: Silver Braze 50Ni2
  • UNS: P07505


  • Brazing Temperature Range High: 1405 F / 763 C
  • Brazing Temperature Range Low: 1355 F / 735 C
  • Liquidus: 1305 F / 707 C
  • Solidus: 1220 F / 660 C



  • Ag: 50%
  • Zn: 28%
  • Cu: 20%
  • Ni: 2%

The information and recommendations contained in this publication have been provided without charge & compiled from sources believed to be reliable and to represent the best information available on the subject at the time of issue. No warranty, guarantee, or representation is made by the Prince and Izant Company, Inc. as to the absolute correctness or sufficiency of any representation contained in this and other publications; Prince and Izant Company, Inc. assumes no responsibility in connection therewith; nor can it be assumed that all acceptable safety measures are contained in this and other publications, or that other or additional measures may not be required under particular or exceptional conditions or circumstances. The company and product names referenced herein are for identification purposes only. All trademarks and registered trademarks are the property of their respective owners.

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