Silver Braze 54
Silver Braze 54 Technical Data
Uses
Silver Braze 54 is employed in numerous furnace brazing situation because of its low zinc content. The US Air Force specifies it for many jet engineer sub-assemblies. It is used for making joints that are subjected to elevated temperatures, ranging up to 700F (370C) particularly on stainless steel.
Brazing Characteristics
Silver Braze 54 is an intermediate temperature silver brazing alloy with a rather long, 235F (130C) melting range. It has a tendency to liquate (Separation into low and high melting constituents) if heated slowly through its melting range. Therefore, it is preferable to use this alloy where the assembly can be heated rapidly to brazing temperature. The long melting range of this alloy is useful when wide gap joints are hand fed since semi-fluid alloys can be working across the gaps. Flux is recommended.
Properties of Brazed Joints
Stainless steel butt joints furnace brazed (in atmosphere) with Silver Braze 54 develop room temperature tensile strengths of 50,000 – 60,000 PSI with commercial joint clearances. Optimum joint clearances will produce higher tensile values.
| Tensile Strength (lbs/in2) |
Test Temperature |
|
| 18-8 Stainless Steel | 21,500 | 500F (260C) |
| 15,000 | 750F (400C) | |
| 7,000 | 1000F (540C) |
Rupture tests at 500F (260C) indicate that sound joints will stand a shear stress of 14,000 PSI for a period of about 650 hours. Tensile values of non-ferrous alloy butt joints will approximate very closesly the following results obtaned with other high silver-copper content brazing alloys:
| Tensile Strength (lbs/in2) |
Elongation (%in 2in) |
|
| Copper | 30,000-35,000 | 10-19 |
|
Brass |
35,000-50,000 | 13-25 |
| Nickel-Silver | 35,000-40,000 | 2-3 |
Specifications
Silver Braze 54 conforms to American Welding Society (AWS) A5.8/A5.8M BAg-13, Society of Automotive Engineers (SAE) AMS 4772
Available Forms
Silver Braze 54 is available in wire, strip, engineered preforms, specialty preforms per customer specification, powder and paste.
Compare With
- AMS: 4772
- AWS: BAg-13
- Lucas: Silvaloy 541
- PI: Silver Braze 54
- UNS: P07540
Specifications
- Brazing Temperature Range High: 1675 F / 913 C
- Brazing Temperature Range Low: 1625 F / 885 C
- Liquidus: 1575 F / 857 C
- Solidus: 1325 F / 718 C
Composition
- Ag: 54%
- Cu: 40%
- Zn: 5%
- Ni: 1%
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.
