AWS A5.8 RBCuZn-D
Copper-Zinc Filler Metals for Brazing, Welding Wire — RBCuZn-D
RBCuZn-D
RBCuZn-D (referred to as nickel silver) is primarily used for brazing tungsten carbide. It is also used with steel, nickel, and nickel alloys. It can be used with all brazing processes. This filler metal is unsuitable for furnace brazing in a protective atmosphere.
| Nominal Chemical Composition (%) | Melting Point | Flow Point | Brazing Temperature | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cu | Zn | Sn | Fe | Mn | Ni | P | Pb | Al | Si | TOEa | °F | °C | °F | °C | °F | °C |
| 46.0-50.0c | BAL | – | – | – | 9.0-11.0d | 0.25 max | 0.05* max | 0.01* max | 0.04-0.25 | 0.50 maxb | 1690 | 921 | 1715 | 932 | 1720-1800 | 938-982 |
a The filler metal shall be analysed for those specific elements for which values or asteriks (*) are shown in this table. If the presence of other elements is indicated in the course of this work, the amount of those elements shall be determined to ensure their total does not exceed the limit specified in “Total Other Elements, TOE.”
b The total of all other elements, including those for which a maximum value or an asterisk (*) is shown, shall not exceed the value specified in “Total Other Elements, TOE.”
c Includes residual silver.
d Includes residual cobalt.