AWS A5.8 Filler Metals for Brazing & Braze Welding

BAg-1

BAg-1 has the lowest melting range in joining ferrous, non-ferrous and dissimilar metals that have a close joint clearance requirement. We recommend a maximum brazing temperature of 1350°F.

BAg-1a

The properties of BAg-1a are similar to those of BAg-1 (AMS 4769) except BAg-1a has a narrower melt range for use on same base metals. We recommend a maximum brazing temperature of 1375°F.

BAg-2

BAg-2 has a broader melt range than BAg-1 (AMS 4769) which makes it suitable for larger gap clearance and easier filleting. We recommend a maximum brazing temperature of 1400°F.

BAg-3 is a universal alloy in the joining of carbide tool assemblies. Nickel addition improves corrosion resistance in marine environments and other caustic media. We recommend a maximum brazing temperature of 1400°F.

BAg-4

BAg-4 has good corrosion properties with stainless steels. It is used in joining tungsten carbides. We recommend a maximum brazing temperature of 1600°F.

BAg-5

BAg-5 is an excellent replacement to cadmium containing alloys. It has broad applications in furnace brazing. We recommend a maximum brazing temperature of 1550°F.

BAg-6

BAg-6 is widely used for electrical application and in joining dissimilar metals. We recommend a maximum brazing temperature of 1600°F.

BAg-7

BAg-7 is an excellent replacement to cadmium containing alloys when low melt temperature is required. It has good corrosion properties and is a color match to stainless. We recommend a maximum brazing temperature of 1400°F.

BAg-8

BAg-8 is good for atmosphere and vacuum furnace brazing of ferrous and nonferrous. It is used in critical electronic and aerospace brazements. We recommend a maximum brazing temperature of 1700°F.

BAg-9

BAg-9 is the third lowest melt alloy of the “Silversmith Alloys.” It is a good color match to silver. We recommend a maximum brazing temperature of 1500°F.

BAg-10

BAg-10 is used on sterling silver. We recommend a maximum brazing temperature of 1550°F.

BAg-13

BAg-13 is low zinc, which is suitable for furnace brazing. It is good for elevated temperatures to 700°F. It is used for carbide assemblies. We recommend a maximum brazing temperature of 1700°F.

Bag-13a

BAg-13a is good for elevated application to 700°F. It’s low zinc content reduces zinc deposit within furnace during brazing operation. We recommend a maxiumum brazing temperature of 1800°F.

BAg-18

BAg-18 is excellent for furnace and vacuum brazing because there are no zinc or cadmium additions. It also has good corrosion resistance to marine environments. We recommend a maximum brazing temperature of 1500°F.

BAg-19

BAg-19 is excellent for joining skins to honeycomb cores, particularly precipitation-hardening stainless steel. We recommend a maximum brazing temperature of 1800°F.

BAg-20

BAg-20 is good for refrigeration assemblies where higher temperatures can be employed. It is used with copper, nick-silvers, and other non-ferrous metals. We recommend a maximum brazing temperature of 1600°F.

BAg-21

BAg-21 is used for stainless steels for corrosion resistance to salt spray, chlorine solutions, etc. We recommend a maximum brazing temperature of 1700°F.

BAg-23

BAg-23 should be used in the brazing of specialty steels and alloys used in high temperature service. We recommend a maximum brazing temperature of 2000°F.

BAg-24

BAg-24 is good for stuff too. We recommend a maximum brazing temperature of XXXX°F.

BAu-2

BAu-2 is used to join steels, stainless steels, nickel based alloys and other materials, where ductility and resistance to oxidation or corrosion is necessary. Gold filler metals readily wet most base metals, including the super alloys, and are especially good for brazing thin sections due to their low interaction with the base metal. We recommend a maximum brazing temperature of 1850°F.

BAu-3

BAu-3 is used to join steels, stainless steels, nickel based alloys and other materials, where ductility and resistance to oxidation or corrosion is necessary. Gold filler metals readily wet most base metals, including the super alloys, and are especially good for brazing thin sections due to their low interaction with the base metal. We recommend a maximum brazing temperature of 1950°F.

BAu-4

BAu-4 is used to join steels, stainless steels, nickel based alloys and other materials, where ductility and resistance to oxidation or corrosion is necessary. Gold filler metals readily wet most base metals, including the super alloys, and are especially good for brazing thin sections due to their low interaction with the base metal. We recommend a maximum brazing temperature of 1840°F.

BAu-6

BAu-6 is used to join steels, stainless steels, nickel based alloys and other materials, where ductility and resistance to oxidation or corrosion is necessary. Gold filler metals readily wet most base metals, including the super alloys, and are especially good for brazing thin sections due to their low interaction with the base metal. We recommend a maximum brazing temperature of 2050°F.

BCuP-2

BCuP-2 exhibits extensive flow. It’s high fluidity leads us to recommend a joint clearance of .001″ to .003″. It is used with copper, brass, and bronze base metal. We recommend a maximum brazing temperature of 1550°F.

BCuP-3

BCuP-3 is used when gap clearance range is .003″ to .005″; ideal for larger copper pipe sizes. We recommend a maximum brazing temperature of 1500°F.

BCuP-4

BCuP-4 is reasonably fluid and similar to BCuP-2 in that it has a recommended joint clearance of .001″ to .003″. Low melting range makes it ideal where temperature is a factor. We recommend a maximum brazing temperature of 1450°F.

BCuP-5

BCuP-5 is best for large gap application, having a clearance of .002″ to .005″. It is the least fluid of the BCuP family and is easy to use. We recommend a maximum brazing temperature of 1500°F.

BCuP-6

BCuP-6 is not as fluid as BCuP-2 yet its gap clearance is similar at .001″ to .005″. The silver addition lowers solidus temperature. We recommend a maximum brazing temperature of 1500°F.

RBCuZn-A

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. Fluxing is generally required, and a borax-boric acid type flux is commonly used. Joint clearances from 0.002 in. to 0.005 in. [0.05 mm to 0.13 mm] are suitable.

RBCuZn-B

RBCuZn-B (low-fuming brass-nickel) braze welding rods are similar to RBCuZn-A rods 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-C

RBCuZn-C is used on steels, copper, copper alloys, nickel, nickel alloys, and stainless steel. It is used with the torch, furnace, and induction brazing processes. Fluxing is required, and a borax-boric acid flux is commonly used. Joint clearnaces from 0.002 in to 0.005 in [0.05 mm to 0.13 mm] are suitable.

RBCuZn-D

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.