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Silver Braze 50

SILVER BRAZE 50 TECHNICAL DATA

USES

Silver Braze 50 may be used on copper, brass, nickel-silver, bronze, steel and other non-ferrous alloys melting above 1450F (765C). Silver Braze 50 has a flow point low enough for most non-ferrous alloys, combined with ductility, high tensile strength and good corrosion resistance, which makes it suitable for various commercial applications. On heavily galvanized or tinned steel its low zinc content permits absorption of more zinc or tin without joint embrittlement. One of the common uses for Silver Braze 50 alloy has been in brazing of steam turbine blades.

BRAZING CHARACTERISTICS

Silver Braze 50 is an intermediate temperature silver brazing filler metal with a fairly long (175F/100C) melting range. This long melting range is helpful when wide gap joints are brazed and is useful in producing large joint fillets to reduce the notch effect on stressed assemblies. This alloy exhibits a high degree of ductility and malleability, which is an advantage when parts are cold worked after brazing.

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(%in 2 in.)

Copper 25,000-30,000  13-22
Brass 45,000-50,000 20-36
Nickel Silver 45,000-55,000 14-28

CORROSION RESITANCT 

Silver Braze 50 is not considered as corrosion resistant as the higher silver content braze filler metals, but the following results were obtained from corrosion tests on the filler metal:

Solution Test Temperature

Conditions

Loss in Weight Mgs/dcm2/Day

Wet Ammonia Gas Room Closed Container 0.29 

Dry Ammonia Gas

Room  Closed Container 0.22 
1% Acetic Acid 200F (95C)  Vapor None 
10% Acetic Acid 200F (95C) Vapor 48 

SPECIFICATIONS

Silver Braze 50 conforms to American Welding Society (AWS) A5.8/A5.8M BAg-6

AVAILABLE FORMS

Silver Brazr 50 is available in wire, strip, engineered preforms, specialty preforms per customer specification, powder and paste.

Compare With

  • AWS: BAg-6
  • Lucas: Silvaloy 501
  • PI: Silver Braze 50
  • UNS: P07503

Specifications

  • Brazing Temperature Range High: 1525 F / 829 C
  • Brazing Temperature Range Low: 1475 F / 802 C
  • Liquidus: 1425 F / 774 C
  • Solidus: 1270 F / 688 C

Composition

 

  • Ag: 50%
  • Cu: 34%
  • Zn: 16%

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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