Braze Alloys
Palcusil® 5 Technical Information
High-purity silver, copper and palladium alloy for vacuum brazing
Key Benefits
- Better wetting than Cusil on Kovar to Mo-Mn seals
- Excellent for vacuum-tight joints
Typical Applications
- RF windows
- Feedthroughs
Nominal Composition by Weight
- Silver (Ag): 68%
- Copper (Cu): 27%
- Palladium (Pd): 5%
Suggested Base Materials
- Kovar
- Copper
- Nickel
- Metallised Ceramic
Forms Available
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Palcusil® 5 Thermal Properties |
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|---|---|---|
|
°C |
°F |
|
|
Liquidus |
810 |
1490 |
|
Solidus |
807 |
1485 |
|
Palcusil® 5 Physical Properties* |
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|---|---|---|---|---|
|
Metric |
Imperial |
|||
|
Coefficient of Thermal Expansion (CTE) |
17.2 |
x10-6/°C for 20 -600°C |
9.6 |
x10-6/°F for 68-1112°F |
|
Yield Strength (0.2% offset) |
333 |
MPa |
48.3 |
x103 lb/in2 |
|
Tensile Strength |
380 |
MPa |
55.2 |
x103 lb/in2 |
|
Elongation (2in/50mm gage section) |
11 |
% |
||
|
Electrical Resistivity |
37 |
x10-9(ohm*m) |
||
|
Electrical Conductivity |
27 |
x106/(ohm*m) |
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|
Recommended Brazing Atmospheres |
10-5 mm Hg, H2, or inert gas |
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* Please note that all values quoted are based on test pieces and may vary according to component design. These values are not guaranteed in any way and should only be treated as indicative values. They should be used for guidance only and for no other purpose whatsoever.