| Silvaloy
A-54N (BAg-13) |
 |
| Nominal Composition: |
|
|
| Silver |
|
54.0
± 1.0% |
| Copper |
|
40.0 ± 1.0% |
| Zinc
|
|
5.0
± 2.0 % |
| Cadmium |
|
1.0
± 0.5 % |
| Total
Other Elements |
|
0.15%
Max. |
| Physical Constants: |
|
|
| Solidus |
|
1325°F
(718°C) |
| Liquidus |
|
1575°F
(857°C) |
| Brazing
Range |
|
1575-1775°F
(857-968°C) |
| Specific
Gravity |
|
9.63 |
| Density
(T.oz./cu.in.) |
|
5.07 |
| Electrical
Conductivity (% IACS) |
|
49.8 |
| Electrical
Resistivity (Michrohm-cm) |
|
3.46 |
| Color |
|
White |
DESCRIPTION:
Silvaloy A-54N is a silver brazing alloy suitable for furnace
brazing due to its low zinc content. Its broader melting range
(250°F) is helpful where clearances are not uniform. During melting,
Silvaloy A-54N passes from the solid state to a mushy or plastic
state and progressively to a liquid. If heated slowly through
this plastic state (1325-1575°F) the liquid portion may flow from
the solid portion. This causes a separation of the alloy into
a low temperature melting (solid) portion. This phenomenon is
called liquation. The high temperature melting portion will melt
only above the normal brazing temperature of Silvaloy A-54N. For
this reason, Silvaloy A-54N should be heated rapidly through the
melting range.
PROPERTIES
OF BRAZED JOINTS:
Generally, the joint strength using Silvaloy A-54N will surpass
the strengths of the base metals. Strength is a function of the
base metals being joined, type of joint, design of joint, joint
clearances and brazing procedures. The recommended maximum operating
temperature for Silvaloy A-54N is up to 700°F (370°C).
APPLICATIONS:
Typical applications are the joining of ferrous, nonferrous and
dissimilar metal and alloys.
| SPECIFICATIONS: |
|
| AWS
A5.8 |
BAg-13 |
| ASME
|
BAg-13 |
| AMS
|
4772 |
SAFETY INFORMATION:
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 Silvaloy A-54N.
AVAILABLE
FORMS:
Standard forms of Silvaloy A-54N are wire, strip, and preforms.
|
