Good for brazing dissimilar metals. #45 is the lowest melting brazing alloy available composed of silver, copper, zinc and cadmium. It is suitable for brazing most metals except aluminum and magnesium. It is used for brazing steel, stainless steel, copper, copper alloys, nickel, nickel alloys or combinations of these metals. It has wide acceptance by industrial users, as well as being included in Federal and military specifications on brazing filler metals or alloys. It has a narrow melting range which is not apparent in most brazing operations, making it flow freely through a capillary.


Melting Pt. 1125 ºF
607 ºC
Flow Pt. 1145 ºF
618 ºC
MBT1 1400
AWS A5.8 BAg-1
AMS 4769
QQ-B-654 Grade VII
MIL-B-15345 Grade VII
Preform Options Brazing Discs 
Brazing Rings 
Brazing Washers 
Resale Options Brazing Rod 
Brazing Strip 
Brazing Wire
Approx. Wire Length (BCuP/lb.) (BAg/Tr.oz) 265 in; 0.031 diameter
28 in; 0.093 diameter 
65 in; 0.062 diameter

Physical Constants

Solidus 1125 ºF
607 ºC
Liquidus 1145 ºF
618 ºC
Brazing Range 1145 to 1400 ºF
618 to 760 ºC
Specific Gravity 9.34
Density 4.96 T.oz./cu.in.
Electrical Conductivity 27.6 % IACS
Electrical Resistivity 6.06 Micro ohm-cm
Color Light Yellow


Typical applications are the brazing of ferrous, nonferrous and dissimilar metals and alloys close joint clearances.

Lowest melting range in joining ferrous, non-ferrous and dissimilar metals with close joint clearance requirement.

Available Forms

Standard forms of Brazeit 45 are brazing wire, brazing strip and brazing preforms.

Safety Information Downloads

#45 contains cadmium and therefore upon heating may produce toxic fumes. It is essential that adequate ventilation be provided so that personnel will not inhale gases and fumes while brazing. The operation and maintenance of brazing equipment or facility should conform to the provisions of American National Standard (ANSI) Z49.1, "Safety in Welding and Cutting." For more complete information, refer to the Material Safety Data Sheet for #45.


Download SDS Sheet

Bellman-Melcor distinguishes itself as a provider of premium quality brazing alloys at industry competitive prices. Our extensive inventory of brazing and soldering alloys ensures that in most cases your order can be available for immediate delivery.


Compare With

  • AMS: 4769
  • AWS: BAg-1
  • EN: AG 302
  • Lucas: Easy-Flo 45
  • PI: Silver Alloy 45
  • UNS: P07450


  • Brazing Temperature Range High: 1245 F / 674 C
  • Brazing Temperature Range Low: 1195 F / 646 C
  • Liquidus: 1145 F / 618 C
  • Solidus: 1125 F / 607 C



  • Ag: 45%
  • Cd: 24%
  • Zn: 16%
  • Cu: 15%

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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