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Silver Braze 49Ni4

Silver Braze 49Ni4 Technical Data


Silver Braze 49Ni4 has excellent wetting properties. It is used extensively for brazing tungsten carbide inserts to cutting tools and rock drills. It may be used for joining all types of stainless steels and carbon steels.

Brazing Characteristics

Silver Braze 49Ni4 is a cadmium-free, low temperature brazing filler metal used for brazing of tungsten carbides, steels and stainless steels. Because of its high manganese content, Silver Braze 49Ni4 may tend to liquate (separation into low and high melting constituents). However this can be mitigated by rapidly heating the joint assembly through of the melting range Silver Braze 49Ni4. Flux may be used, but on some more of the more difficult to braze alloys, such as carbides and stainless steels, flux assists in producing better wetting of the joint surfaces.

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. The results below are generated from Silver Braze 49Ni4 butt joints which were tested under standard room temperature conditions.

  Tensile Strength (lbs/in2)

Elongation(%, 2" gage length) 

1020 Carbon Steel  49,200  4
1095 Carbon Steel 92,400   7
304 Stainless Steel 76,600   15


Silver Braze 49Ni4 conforms to American Welding Society (AWS) A5.8/A5.8M BAg-22

Available Forms

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

Compare With

  • AWS: BAg-22
  • EN: AG 502
  • Lucas: Silvaloy 495
  • PI: Silver Braze 49Ni4
  • UNS: P07490


  • Brazing Temperature Range High: 1390 F / 754 C
  • Brazing Temperature Range Low: 1340 F / 727 C
  • Liquidus: 1290 F / 699 C
  • Solidus: 1260 F / 682 C



  • Ag: 49%
  • Zn: 23%
  • Cu: 16%
  • Mn: 7.5%
  • Ni: 4.5%

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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