| Silvaloy
50N (BAg-3) |
 |
| Nominal Composition: |
|
|
| Silver |
|
50.0
± 1.0% |
| Copper |
|
15.5
± 1.0% |
| Zinc |
|
15.5
± 2.0% |
| Cadmium |
|
16.0 ± 1.0% |
| Nickel |
|
3.0
± 0.5% |
| Total
other elements |
|
0.15%
Max. |
| Physical Constants: |
|
|
| Solidus |
|
1170°F
(632°C) |
| Liquidus |
|
1270°F
(688°C) |
| Brazing
Range |
|
1270-1500°F
(688-816°C) |
| Specific
Gravity |
|
9.49 |
| Density
(T.oz./cu.in.) |
|
5.00 |
| Electrical
Conductivity (% IACS) |
|
18 |
| Electrical
Resistivity (Michrohm-cm) |
|
9.58 |
| Color |
|
Light
Yellow |
DESCRIPTION:
Silvaloy 50N is a modification of Silvaloy 50. It was originally
introduced because of somewhat better corrosion resistance than
Silvaloy 50 for certain conditions, and is still used for such
purposes. It has proven successful on many marine applications
and for dairy equipment which must withstand strong cleaning solutions.
The 3% nickel content of this alloy also improves its wetting
of stainless steel and tungsten carbide tool tips. At the present
time, the largest use of this solder is for attaching carbide
cutting tips to tool shanks.
PROPERTIES
OF BRAZED JOINTS:
Generally, the joint strength using Silvaloy 50N 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 50N is up to 400°F in continuous service
and up to 600°F in intermittent service.
APPLICATIONS:
When melting, Silvaloy 50N passes from the solid state to a mushy
or plastic range and progressively to a liquid. The largest portion
of Silvaloy 50N melts in the upper section of its temperature
range. Therefore, the alloy has a good body while in the plastic
range and is suitable for building fillets or bridging large gaps.
Late melting of the major portion of the alloy also helps minimize
any separation of the solid and liquid portions by liquation during
melting.
| SPECIFICATIONS: |
|
| AWS
A5.8 |
BAg-3 |
| ASME |
BAg-3 |
| QQ-B-654 |
Grade
V |
| AMS |
4771 |
| MIL-B-15395
|
Grade
V |
SAFETY INFORMATION:
Silvaloy 50N 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 of facility
should conform to the provisions of American National Standard
(ANSI) Z49.1, “Safety in Welding and Cutting.” For further information
refer to the Material Safety Data Sheet for Silvaloy 50N.
AVAILABLE
FORMS:
Standard forms of Silvaloy 50N are wire, strip and preforms.
|
