GoldAlloy BV-50
Nominal Chemical
Composition
INTRODUCTION
Aufhauser GoldAlloy BV-50 is a special alloy for vacuum brazing.
APPLICATIONS
GoldAlloy BV-50 is used on any ferrous and non-ferrous alloys. Provides good wetting on metallized ceramics, including molybdenum-manganese metallized. Good for Kovar alloys. Has greater strength than BV-35 alloy. GoldAlloy BV-50 is used in vacuum, inert or reducing atmosphere. It exhibits free flowing characteristics.
GENERAL INFORMATION
Chemical Composition, Grade 1 (Grade 2)| Au | Cu | Zn | Cd | Pb | P | C | Other volatile elements * |
|---|---|---|---|---|---|---|---|
| 50.0 ± 0.5 | Remainder | < 0.001 (< 0.002) |
< 0.001 (< 0.002) |
< 0.002 (< 0.002) |
< 0.002 (< 0.002) |
< 0.005 (< 0.005) |
< 0.001 (< 0.002) |
Total volatile elements 0.01 max. Total non-volatile elements 0.05 max. (*) Elements with a vapor pressure higher than 10-7 torr at 932°F (500°C) such as Mg, Sb, K, Na, Li, Ti, S, Cs, Rb, Se, Te, Sr, and Ca.
ADDITIONAL INFORMATION
PHYSICAL and MECHANICAL PROPERTIES
| Solidus (Melting point) | 1751°F (955°C) |
| Liquidus (Flow point) | 1778°F (970°C) |
| Brazing temperature range | 1778-1868°F (970-1020°C) |
| Density | 12.2 g/cm³ (6.44 troy oz/in³) |
| Tensile strength | 393 MPa (57.0 x 103 lb/in2) |
| Electrical Conductivity, % IACS | 7.87 |
| Electrical Resistivity, microhm-cm | 23.7 |
| Color | Red brass |
SPECIFICATIONS MEET or EXCEED |
| AWS A5.8/A5.8M BVAu-10 |
| UNS P00503 |
AVAILABLE FORMS |
| Powder, Paste |
| Foil, Wire, Strip |
| Specialty preforms per customer specifications |