| Silvaloy
A-38T (BAg-34) |
 |
| Nominal Composition: |
|
|
| Silver |
|
38.0
± 1.0% |
| Copper |
|
32.0 ± 1.0% |
| Zinc
|
|
28.0
± 2.0 % |
| Total
Other Elements |
|
0.15%
Max. |
| Physical Constants: |
|
|
| Solidus |
|
1200°F
(649°C) |
| Liquidus |
|
1330°F
(721°C) |
| Brazing
Range |
|
1330-1550°F
(721-843°C) |
| Specific
Gravity |
|
9.05 |
| Density
(T.oz./cu.in.) |
|
4.77 |
| Electrical
Conductivity (% IACS) |
|
18.0 |
| Electrical
Resistivity (Microhm-cm) |
|
9.50 |
| Color |
|
Pale
Yellow |
DESCRIPTION:
Silvaloy A-38T is used for joining ferrous metals, copper, copper
alloys, nickel, nickel alloys and combinations of these metals.
The tin content provides good wetting on many difficult to wet
metals such as stainless steel and tungsten carbide. This alloy,
being free of Zn or Cd, is preferred for long heating cycles and
is suitable for use in a controlled atmosphere brazing without
flux. The largest use of this alloy is for furnace brazing although
it is also suitable for other brazing procedures.
PROPERTIES
OF BRAZED JOINTS:
Generally, the joint strength using Silvaloy A-38T 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-38T is up to 400°F in continuous service
and up to 600°F in intermittent service. Where improved corrosion
resistance is needed, Silvaloy A-50N and Silvaloy A-40N2 are recommended
over silver base filler metals not containing nickel.
APPLICATIONS:
Typical applications are the joining of ferrous, nonferrous and
dissimilar metals and alloys with close joint clearances.
| SPECIFICATIONS: |
|
AWS
A5.8
|
BAg-34 |
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-38T.
AVAILABLE
FORMS:
Standard forms of Silvaloy A-38T are wire and preforms.
|
