RBCuZn-A Flux Coated Brazing Wire

Specifications: AWS A5.8 RBCuSn-A  BS EN14640 CuSn40
Applications: AWS A5.8 RBCuSn-A wire is most popular for padding material of gas-welding and carbon arc welding in brass. It could also be used in brazing of copper, steel, copper-nickel, cast iron and carbide cutting alloy tools incrustation.

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
Pb 0.05 max0.05 0.05 0.05
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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