RBCuZn-A Naval Bronze Flux Coated Brazing Wire
RBCuZn-A Naval Bronze Flux Coated Brazing Wire Introduction
RBCuZn-A is a copper-zinc brazing filler metal that contains tin for improved strength when used on copper and copper alloys. RBCuZn-A is used on steels, copper, copper alloys, nickel, nickel alloys, and stainless steel when corrosion resistance is not of importance. It is used with torch, furnace, and induction brazing processes.
This copper alloy has 1% tin filler metal used for brazing or oxyacetylene welding of steel, cast iron, malleable iron, copper-bronze and nickel alloys. The addition of tin improves strength and corrosion resistance in the weld deposit. A borax-boric acid flux is generally required. Joint clearances should be 0.002” to 0.005” wide. Preheating may be desirable for some applications. Neutral or slightly oxidizing flames should be used.
RBCuZn-A Naval Bronze Flux Coated Brazing Wire Typical Chemical Composition
| Standard | ISO24373 | GB/T9460 | BS EN14640 | AWS A5.8 |
| Class | Cu4700 | SCu4700 | Cu4700 | C47000 |
| Alloy | CuZn40Sn | CuZn40Sn | CuZn40 | RBCuZn-A |
| Cu | 57.0-61.0 | 57.0-61.0 | 57.0-61.0 | 57.0-61.0 |
| Al | 0.01 | max0.01 | 0.01 | 0.01 |
| Fe | – | – | – | |
| Mn | – | – | – | |
| Ni | – | – | – | – |
| P | – | – | – | – |
| Pb | 0.05 | max0.05 | 0.05 | 0.05 |
| Si | – | – | – | |
| Sn | 0.25-1.0 | 0.25-1.0 | 0.25-1.0 | 0.25-1.00 |
| Zn | bal. | bal. | bal. | bal. |
| Other | 0.5 | max0.5 | 0.5 | 0.5 |
RBCuZn-A Naval Bronze Flux Coated Brazing Wire Physical & Mechanical Properties
| Solids-Temperature | 886℃ |
| Liquids-Temperature | 901℃ |
| Density | 8.45㎏/dm3 |
| Elongation | 35% |
| Tensile Strength | 375N mm2 |
| Brinell Hardness | 85HB |
Please note that the above specifications are “general specifications” that pertain to the majority of our production. These specifications should only be used for general, informational purposes. All dimensions and specifications are nominal and are subject to normal manufacturing tolerances. All specifications are subject to change without prior notice. All pictures shown are for illustration purposes only. Actual product may vary.
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