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Silver Braze 38

Silver Braze 38 Technical Data


Silver Braze 38 is a good general purpose low temperature brazing filler metal for use in cadmium-free brazing applications, such as air conditioning and refrigeration which involve the joining of steels, copper, copper alloys and nickel alloys. 

Brazing Characteristics

Silver Braze 38 is a free-flowing, low temperature filler metal with excellent wetting characteristics of most ferrous and non-ferrous base metals, and is a good substitute for cadmium-bearing filler metals with similar silver content. The tin content found in this brazing alloy improves the wetting of tungsten carbide, stainless steel and other difficult metals. The absence of lead an cadmium allows for the use of longer heating cycles. The material is best suited for narrow gap situations (0.001” – 0.005” radial joint clearance). Flux should be used with this filler metal.

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. 

  Tensile Strength (lbs/in2)

Elongation(%, 2" gage length)

Low Carbon Steel 55,000-65,000 8-13
304 Stainless Steel 80,000-85,000  2-5
Copper 31,000-35,000  25-35
Brass 35,000-45,000 15-30


Silver Braze 38 conforms to American Welding Society (AWS) A5.8/A5.8M BAg-34, Society of Automotive Engineers (SAE) AMS 4761

Available Forms

Silver Braze 38 is avialble in wire, strip, engineered preforms, specialty preforms per customer specification, powder and paste.

Compare With

  • AMS: 4761
  • AWS: BAg-34
  • Lucas: Silvaloy 380
  • PI: Silver Braze 38
  • UNS: P07380


  • Brazing Temperature Range High: 1430 F / 777 C
  • Brazing Temperature Range Low: 1380 F / 749 C
  • Liquidus: 1330 F / 721 C
  • Solidus: 1200 F / 649 C



  • Ag: 38%
  • Cu: 32%
  • Zn: 28%
  • Sn: 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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