GoldAlloy BV-ACN-81
Nominal Chemical
Composition
INTRODUCTION
Aufhauser GoldAlloy BV-ACN-81 is a special alloy for vacuum brazing.
APPLICATIONS
GoldAlloy BV-ACN-81 is a high-purity gold-copper-nickel brazing alloy for vacuum brazing, remaining ductile after application. Widely used for brazing ceramic components that have been molybdenum-manganese metallized. Provides high-integrity brazed joint duties in aero-engines, aerospace fuel-line assemblies, vacuum tubes, automotive components.
GENERAL INFORMATION
Chemical Composition, Grade 1 (Grade 2)| Au | Cu | Ni | Zn | Cd | Pb | P | C | Other volatile elements * |
|---|---|---|---|---|---|---|---|---|
| 81.5 ± 0.5 | Remainder | 2.0 ± 0.25 | < 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) | 1670°F (910°C) |
| Liquidus (Flow point) | 1697°F (925°C) |
| Brazing temperature range | 1670-1798°F (910-981°C) |
| Density | 17.4 g/cm³ (9.16 troy oz/in³) |
| Tensile strength | 520 MPa (75.5 x 103 lb/in2) |
| Electrical Conductivity, % IACS | 9.20 |
| Electrical Resistivity, microhm-cm | 18.7 |
| Color | Gold gray |
AVAILABLE FORMS |
| Powder, Paste |
| Foil, Wire, Strip |
| Specialty preforms per customer specifications |