Copper Brazing Alloys
| Aufhauser Trade Name | Cu | Al | Zn | Sn | Mn | Si | Ni | Fe | Melting Point | AWS A5.7/ A5.8 | Description |
|---|---|---|---|---|---|---|---|---|---|---|---|
| OFHC Copper CDA 101 (BVCu-1x) |
99.99 | - | - | - | - | - | - | - | 1981°F/ 1083°C | BVCu-1x | Vacuum Brazing Oxygen Free High Conductivity Copper used in the brazing of ferrous and nickel-based alloys, optimally in vacuum furnace. |
| 189
Deoxidized Copper (ERCu) Electrode (ECu) |
98.0 | - | - | 1.0 | 0.5 | 0.5 | - | - | 1967°F/ 1075°C | ERCu | Coated
Electrode | MIG/TIG/Torch Used for welding of deoxidized and electrolytic tough pitch copper. |
|
470
Naval Bronze (RBCuZn-A) |
59.0 | - | 40.4 | 0.6 | - | - | - | - | 1625°F/ 885°C | RBCuZn-A | Torch Used to braze on steels, copper alloys, nickel alloys and stainless steels, the addition of tin improves strength and corrosion resistance in the weld deposit. |
|
518 Phosphor Bronze-A (ERCuSn-A) Electrode (ECuSn-A) |
94.4 | - | - | 5.0 | - | - | - | - | 1750°F/ 954°C | ERCuSn-A | Coated
Electrode | MIG/TIG/Torch Can be used to weld bronze and brass, they can also be used to weld copper if the presence of tin in the weld metal is not objectionable |
| 521
Phosphor Bronze-C (ERCuSn-C) Electrode (ECuSn-C) |
91.6 | - | 0.2 | 8.0 | - | - | - | 0.1 | 1880°F/ 1027°C | ERCuSn-C | Coated
Electrode | MIG/TIG/Torch Similar to 518, with higher tin content, for greater hardness. |
| 610
Aluminum Bronze-A1 (ERCuAl-A1) Electrode (ECuAl-A1) |
90.8 | 8 | 0.2 | - | 0.5 | 0.1 | - | - | 1905°F/ 1041°C | ERCuAl-A1 | Coated
Electrode | MIG/TIG/Torch Iron free, used primarily for wear and corrosion resistant overlay. |
|
618 Aluminum
Bronze-A2 (ERCuAl-A2) Electrode (ECuAl-A2) |
88.4 | 10.0 | - | - | - | 0.1 | - | 1.5 | 1913°F/ 1045°C | ERCuAl-A2 | Coated
Electrode | MIG/TIG/Torch Best choice aluminum bronze; versatile, with welding and overly capabilities. Used to join combinations of dissimilar materials, such as aluminum bronze to steel and copper to steel, and copper nickel alloys. It is also used as for wear and corrosion resistant overlays. |
| 624 Aluminum Bronze-A3 (ERCuAl-A3) | 85.3 | 10.8 | 0.10 | - | - | - | - | 3.7 | 1900°F/ 1038°C | ERCuAl-A3 | MIG/TIG/Torch Used primarily for joining and repair welding of aluminum bronze castings with relatively higher strength. |
| 632
Nickel Aluminum Bronze (ERCuNiAl) Electrode (ECuNiAl) |
79.3 | 9.0 | 0.1 | - | 2.0 | 0.1 | 5.0 | 4.0 | 1940°F/ 1060°C | ERCuNiAl | Coated
Electrode | MIG/TIG/Torch An iron wire for welding aluminum bronzes, high strength copper-zinc alloys, silicon and manganese bronzes, and many ferrous metals. Also used to join combinations of dissimilar materials, and to overlay metal for wear and corrosion resistance. |
| 633
Manganese Nickel Aluminum Bronze (ERCuMnNiAl) Electrode (ECuMnNiAl) |
72 | 7.8 | 0.15 | - | 12.5 | 0.10 | 2.5 | 3.0 | n/a | ERCuMnNiAl | Coated
Electrode | MIG/TIG/Torch Used for joining or repairing of cast or wrought base metals of similar composition for high resistance to corrosion, erosion and cavitations, such as cast ship propellers. Also exhibits good ability to join dissimilar metals. |
| 656
Silicon Bronze (ERCuSi-A) Electrode (ECuSi-A) |
92.1 | - | 1.0 | 1.0 | 1.5 | 3.4 | - | 0.5 | 1866°F/ 1019°C | ERCuSi-A | Coated
Electrode | MIG/TIG/Torch Popular alloy for TIG / MIG and oxyacetylene welding of copper silicon and copper -zinc base metals, and for many sheet metal applications employing plain and galvanized steel. Very popular for use in metal sculpture. All positions welding. |
|
680
Low-Fuming Bronze Nickel (RBCuZn-B) |
58.0 | - | 39.2 | 0.95 | 0.25 | - | 0.5 | 0.72 | 1620°F/ 882°C | RBCuZn-B | Torch A superior alternative within the RBCuZn family. Higher joint strength, better color match with stainless steel and cast iron, and easy machinability of the weld fillet. Often offers a low cost alternative to silver brazing of steels. |
|
681 Low-Fuming Bronze (RBCuZn-C) |
58.0 | - | 40 | 0.95 | - | - | - | 0.75 | 1630°F/ 888°C | RBCuZn-C | Torch Low cost, versatile alloy. Used with torch, furnace and induction brazing welding on steels, cast iron, copper alloys, nickel alloys and stainless steel. |
| 715
Copper Nickel (ERCuNi) Electrode (ECuNi) |
66.8 | - | - | - | 1.0 | 0.25 | 30.5 | 0.6 | 2260°F/ 1238°C | ERCuNi | Coated
Electrode | MIG/TIG/Torch For joining of most copper-nickel alloys with excellent corrosion resistant properties. Preheating is not required. |
| 773
Nickel Silver (RBCuZn-D) |
48.0 | - | 42 | - | - | - | 10 | - | 1680°F/ 915°C | RBCuZn-D | Torch Used for brazing Tungsten carbides, copper alloys, nickel alloys, stainless steels, carbon steels, and cast iron. Good color match to stainless steel. A superior alternative in terms of color match, joint strength and machinability. This is a low cost alternative to silver brazing alloys. |
Nominal Composition