RBCuZn-D Nickel Silver Brazing Welding Wire

Specifications: AWS A5.8 RBCuSn-D
Applications: AWS A5.8 RBCuZn-D is used in the joints and gears of machinery, automatic technological industries, and steel-furniture industries. It is suitable for surface corrosion resistance hard facing for cast steel, cast iron, copper-alloy, and nickel-alloy, as well as the butt welding of cast iron.

RBCuZn-D Nickel Silver Brazing Welding Wire

RBCuZn-D Nickel Silver Brazing Welding Wire Introduction

RBCuZn-D Nickel Silver is a bare brazing wire used widely as a replacement for high-cost silver brazing alloys when higher brazing temperatures are acceptable. The weld deposits have a very high tensile strength, good ductility, and excellent corrosion resistance. Nickel Silver weld deposits are also readily machinable and will not work harden when put into service. A neutral or slightly oxidizing flame is recommended.

RBCuZn-D Typical Applications included Brazing tungsten carbides, copper alloys, nickel alloys, stainless and carbon steel; building up and/or overlaying worn parts such as gear teeth, bearings, and valve seats; brazing steel or cast iron where a good color match is desired

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.

Both bare or flux-coated can be supplied.

RBCuZn-D Nickel Silver Brazing Welding Wire Typical Chemical Composition

Standard ISO24373 GB/T9460 BS EN14640 AWS A5.8
Class Cu7730 SCu7730 Cu7730 C77300
Alloy CuZn40Ni10 CuZn40Ni10 CuZn40Ni10 RBCuZn-D
Cu 46.0-50.0 46.0-50.0 46.0-50.0 46.0-50.0
Al 0.01 max0.01 0.01
Ni 9.0-11.0 9.0-11.0 9.0-11.0 9.0-11.0
P 0.25 max0.25 0.25
Pb 0.05 max0.05 0.03 0.05
Si 0.04-0.25 0.04-0.25 0.2 0.04-0.25
Sn 0.8-1.1
Zn bal. bal. bal. bal.
Other 0.5 max0.5 0.5 0.5

RBCuZn-D Nickel Silver Brazing Welding Wire Physical & Mechanical Properties

Density 8.7㎏/dm3
Tensile Strength 385N/ mm2
Liquids-Temperature 935℃
Solids-Temperature 890℃
Elongation 25%
Brinell Hardness 120HB

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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