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RBCuZn-B Copper Zinc Brazing Wire

Specifications: AWS A5.8 RBCuSn-B  BS EN14640 CuZn40Ni
Applications: AWS A5.8 RBCuSn-B welding wire is used for brazing steel, cast iron, copper, copper alloys, nickel, nickel alloys, it also could be used with the torch, induction and furnace processes.

RBCuZn-B Copper Zinc Flux Coated Brazing Wire

RBCuZn-B Copper Zinc Flux Coated Brazing Wire Introduction

RBCuZn-B (low-fuming brass-nickel) braze welding wires are similar to RBCuZn-A but contain additions of iron and manganese which serve to increase the hardness and strength. In addition, a small amount of silicon [0.04% to 0.20%] serves to control the vaporization of the zinc, yielding the “low-fuming” property. The nickel addition [0.2% to 0.8%] assures uniform distribution of the iron in the deposit.

The filler metal is used for brazing and braze welding of steel, cast iron, copper, copper alloys, nickel, nickel alloys, and stainless steel. RBCuZn-B filler metal also is used for the surfacing of steel. It is used in torch, induction, and furnace processes. Flux and joint clearances from 0.002 in to 0.005 in [0.05 mm to 0.13 mm] are suitable.

RBCuZn-B  Nickel Bronze (RBCuZn-B) brazing filler metal is similar to naval bronze but contains manganese and iron which increase the hardness and strength of the weld deposit.  It also contains nickel ensuring uniform distribution of the iron in the deposit.  A neutral or slightly oxidizing flame and a boric acid/boric type flux should be used.

RBCuZn-B Copper Zinc Flux Coated Brazing Wire Typical Chemical Composition

Standard ISO24373 GB/T9460 BS EN14640 AWS A5.8
Class Cu6800 SCu6800 Cu6800 C68000
Alloy CuZn40Ni CuZn40Ni CuZn40Ni RBCuZn-B
Cu 56.0-60.0 56.0-60.0 56.0-60.0 56.0-60.0
Al 0.01 max0.01 0.01 0.01
Fe 0.25-1.20 0.25-1.20 0.2-1.2 0.25-1.20
Mn 0.01-0.50 0.01-0.50 0.5 0.01-0.50
Ni 0.2-0.8 0.2-0.8 0.2-0.8 0.20-0.80
P
Pb 0.05 max0.05 0.03 0.05
Si 0.04-0.20 0.04-0.15 0.2 0.04-0.20
Sn 0.8-1.1 0.8-1.1 0.8-1.1 0.80-1.10
Zn bal bal. bal. bal
Other 0.5 max0.5 0.2 0.5

RBCuZn-B Copper Zinc Flux Coated Brazing Wire Physical & Mechanical Properties

Tensile Strength, kpsi: 60-78
Elongation %, min: 25
Melting Point 883℃
Solidification 866℃
Brinell Hardness 80-110
Brazing Range 882℃-982℃

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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