SilverAlloy BV-60
Nominal Chemical
Composition
INTRODUCTION
Aufhauser SilverAlloy BV-60 is a special alloy (very low level of impurities) for vacuum brazing.
APPLICATIONS
Application is found in all types of moderate temperature low pressure systems, and in particular the electronic vacuum tube.
GENERAL INFORMATION
Chemical Composition, Grade 1 (Grade 2)| Ag | Cu | Sn | Zn | Cd | Pb | P | C | Other Volatiles * |
Total Volatiles (including Cd, Zn, Pb) |
Total Non-Volatiles |
|---|---|---|---|---|---|---|---|---|---|---|
| 59-61 | 28-31 | 9.5-10.5 | < 0.001 (< 0.002) |
< 0.001 (< 0.002) |
< 0.002 (< 0.002) |
< 0.002 (< 0.02) |
< 0.005 (< 0.005) |
< 0.002 | < 0.01 | < 0.05 |
* Elements with a vapor pressure higher than 10-7 torr at 500°C such as S, Se, Te, Sb, Li, Na, K, Rb, Cs, Ca, Mg, Sr, Ti.
ADDITIONAL INFORMATION
Properties of brazed joints: For controlled atmosphere vacuum brazing the recommended radial joint clearance for silver base alloys is within 0.0015 - 0.002 in (0.038 - 0.051 mm) range.
PHYSICAL and MECHANICAL PROPERTIES
| Solidus (Melting point) | 1112°F (600°C) |
| Liquidus (Flow point) | 1328°F (720°C) |
| Brazing Range | 1325-1550°F (718-843°C) |
| Density | 9.82 g/cm³ (5.17 TO/in³) |
| Electrical Conductivity | 7.10 %IACS |
| Electrical Resistivity | 24.1 μohm-cm |
SPECIFICATIONS MEET or EXCEED |
| AWS A5.8 BVAg-18 (Grade 1 & 2, ISO 9002) |
| ASME Boiler & Pressure Vessel Code, Sec II-C, SFA-5.8 |
| Society of Automotive Engineers (SAE) AMS 4773 |
| UNS P07600 |
| EN 17672 Ag 160 |
AVAILABLE FORMS |
| Powder/Paste |
| Wire, Rods*, Foil |
| Specialty preforms per customer specifications |
*STANDARD SIZES AND DIAMETERS |
| Diameters: 1/32", 3/64", 1/16", 3/32", 1/8" |
| Sizes: 1, 3, 5, or 50 troy ounces |