Silver & Gold Brazing Alloys


Expand All Collapse All
Silver Brazing Alloys

Silver Brazing Alloys

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

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.
Silver Brazing Alloys
Grade Nominal Chemical Composition (%) Melting Point Flow Point
Ag Cu Zn Cd P Ni Sn Mn Li °F °C °F °C
BAg-1 45 15 16 24 - - - - - 1125 605 1145 615
BAg-1a 50 15.5 16.5 18 - - - - - 1160 625 1175 635
BAg-2 35 26 21 18 - - - - - 1125 605 1295 700
BAg-3 50 15.5 15.5 16 - 3 - - - 1170 630 1270 690
BAg-4 40 30 28 - - 2 - - - 1220 660 1435 780
BAg-5 45 30 25 - - - - - - 1225 665 1370 745
BAg-6 50 34 16 - - - - - - 1250 675 1425 775
BAg-7 56 22 17 - - - 5 - - 1145 620 1205 650
BAg-8 72 28 - - - - - - - 1435 780 1435 780
BAg-9 65 20 15 - - - - - - 1240 670 1325 720
BAg-10 70 20 10 - - - - - - 1275 690 1360 740
BAg-13 54 40 5 - - 1 - - - 1340 725 1575 855
BAg-13a 56 42 - - - 2 - - - 1420 770 1640 895
BAg-18 60 30 - - - - 10 - - 1115 600 1325 720
BAg-19 92.5 7.3 - - - - - - 0.2 1400 760 1635 890
BAg-20 30 38 32 - - - - - - 1250 675 1410 765
BAg-21 63 28.5 - - - 2.5 6 - - 1275 690 1475 800
BAg-23 85 - - - - - - 15 - 1760 960 1780 970
BAg-24 50.00 20.00 28.00 - - 2.00 - - - 1220 660 1305 705


Gold Brazing Alloys

Gold Brazing Alloys

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.
Gold Brazing Alloys
Grade Nominal Chemical Composition (%) Melting Point Flow Point
Au Ni Pd Cu TOE °F °C °F °C
BAu-2 79.5-80.5 - - BAL 0.15 1635 891 1635 891
BAu-3 35.0 3.0 - 62.0 - 1785 974 1885 1029
BAu-4 82.0 18.0 - - - 1740 949 1740 949
BAu-6 70.0 22.0 8.0 - - 1845 1007 1915 1046


PhosBronze Brazing Alloys

PhosBronze Brazing Alloys

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.
PhosBronze Brazing Alloys
Grade Nominal Chemical Composition (%) Melting Point Flow Point
Ag Cu Zn Cd P Ni Sn Mn °F °C °F °C
BCuP-2 0 92.75 - - 7.25 - - - 1310 710 1350 735
BCuP-3 5 89 - - 6 - - - 1190 645 1325 720
BCuP-4 6 86.75 - - 7.25 - - - 1190 645 1275 690
BCuP-5 15 80 - - 5 - - - 1190 645 1300 705
BCuP-6 2 91 - - 7 - - - 1190 645 1325 720