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Composition by weight %
Family
Solidus/liquidus
point (°C)
Toxic
Comments
Cu
Zn
Ag
Au
Pd
Pt
Ti
Cr
Mo
W
Mn
Fe
Co
Ni
Cd
Sn
Al
B
Si
P
other
Ag
54
Cu
40
Zn
5
Ni
1
Ag–
Cu–Zn
725/855
[41]
718/857
[42]
–
BAg-13, AMS 4772, Braze 541, Silvaloy A54N, Silver Braze 54. Atmosphere
furnace brazing. Melts through mushy state, tends to liquate. Broader melting
range suitable for non-uniform clearances. Suitable for hand-feeding of wide-gap
joints as the mushy alloy can be worked into shape. For joining ferrous, nonferrous
and dissimilar metals. Used in furnace brazings due to low zinc content. For high-
temperature applications e.g. on jet engines, especially on stainless steel;
maximum service temperature 371 °C. Used in many jet engine subassemblies for
US Air Force. White color.
40
5
54
1
Ag
56
Cu
42
Ni
2
Ag–Cu
770/895
[41]
771/893
[43]
–
BAg-13a, AMS 4765, Braze 559, Silver Braze 56Ni2. Atmosphere furnace
brazing. For high-temperature applications (up to 370 °C), e.g. on jet engines. Zinc
free; used instead of BAg-13 where zinc fumes in the furnace are not allowed.
Similar to BAg-13. Tends to liquate. Can be used for wide gap joints. Can be used
with flux, but mostly used for fluxless furnace brazing of stainless steel in dry
hydrogen. White color.
42
56
2
Ag
49
Cu
16
Zn
23
Mn
7.5
Ni
4.5
Ag–
Cu–Zn
680/700
[41]
682/699
[44]
–
BAg-22, AG 502, Braze 495, Silvaloy A49NM, Argo-braze 49H, Silver Braze
49Ni4. Low-temperature. For tungsten carbide and all types of carbon steels and
stainless steels. For attaching tungsten carbide tips to steel holders. Excellent
wetting properties, used extensively for attaching tungsten carbide bits to cutting
tools and rock drills. Tends to liquate.
16
23
49
7.5
4.5
Ag
49
Cu
27.5
Zn
20.5
Mn
2.5
Ni
0.5
Ag–
Cu–Zn
670/710
[45]
–
Argo-braze 49LM. For attaching tungsten carbide tips to steel holders. Supplied as
Trifoil – copper foil sandwiched between braze alloy foils. The copper layer helps
absorbing stresses caused by differential heating.
27.5
20.5
49
2.5
0.5
Ag
65
Cu
20
Zn
15
Ag–
Cu–Zn
670/720
[46]
–
BAg-9, Braze 650, Silver Braze 65. For iron, silverware, and nickel alloys. Slight
tendency to liquate. Silver-white color; used in silversmithing due to color match.
Corrosion-resistant. Remelt temperature altered by dissolving base metal;
increased by silver, decreased by copper. Often used for step brazing.
20
15
65
Ag
65
Cu
28
Mn
5
Ni
2
Ag–Cu
750/850
[46]
–
Braze 655. For alloys like kovar and invar to copper, for vacuum tubes. As rubbing
seals in jet engines.
28
65
5
2
Ag
70
Cu
20
Zn
10
Ag–
Cu–Zn
690/740
[46]
–
BAg-10, Braze 700, Silver Braze 70. For silverware. Wets nickel and iron alloys.
For step brazing, with BAg-9 as next step. Slight tendency to liquate. Silver-white
color; used in silversmithing due to color match. Corrosion-resistant. Remelt
temperature altered by dissolving base metal; increased by silver, decreased by
copper. Often used for step brazing.
20
10
70
Ag
56
Cu
22
Zn
17
Sn
5
Ag–
Cu–Zn
620/655
[1]
618/652
[10][11][47]
620/650
[41]
–
BAg-7, AG 102, L-Ag55Sn, Ag 1, AMS 4763, Braze 560, Silvaloy A56T, Matti-sil
56Sn, BrazeTec 5600, Silver Braze 56. Low-melting. Excellent for general
purpose brazing of close-tolerance joints. Lowest melting point cadmium-free silver
alloy. Low zinc content minimizes issues with prolonged or repeated heating. Slight
tendency to liquate. Used in plumbing. Used in food equipment. Gap 0.05–
0.15 mm. White color; often chosen for silver or stainless steel due to excellent
color match. Maximum service temperature 204 °C (intermittently 316 °C). For
brazing steels, copper and its alloys, nickel and its alloys. Good alternative to
cadmium-containing brazes. Good wicking. Can be used for induction brazing and
flame brazing. Used in electrotechnics, automotive industry and toolmaking.
[48]
For
improved corrosion resistance on stainless steel, use a nickel-containing alloy, e.g.
BAg-24 or BAg-21.
22
17
56
5
Ag
57.5
Cu
32.5
Sn
7
Mn
3
Ag–Cu
605/730
[41]
–
Braze 580. Free-flowing. For brazing tungsten carbide. Wets some metals that are
difficult to wet by more standard alloys, e.g. chromium and tungsten carbides. Does
not tend to produce porous fillets despite manganese content. Excellent wetting of
high manganese stainless steels in vacuum brazing. Does not outgas during
titanium nitride coating.
32.5
57.5
3
7
Ag
68
Cu
27
Sn
5
Ag–Cu
743/760
–
Cusiltin 5. Low vapor pressure. Stronger than BAg-8.
27
68
5
Ag
60
Cu
25
Zn
15
Ag–
Cu–Zn
675/720
[41]
–
Braze 600. For nickel alloys (e.g. Monel). For silverware instead of BAg-9 when
only one joint is needed. Fluidity decreased on copper and increased on silver due
to dissolution of base metal. Easily wets nickel and iron alloys due to zinc content.
Eutectiferous. White color, slightly more yellow than BAg-9.
25
15
60
Ag
71.5
Cu
28
Ni
0.5
Ag–Cu
780/795
[46]
–
BAg-8b, BVAg-8b, AMS 4766, Braze 715, Braze 716 (VTG grade, for vacuum
systems, with reduced volatile impurities) For ferrous and nonferrous alloys. For
atmospheric brazing of nickel and ferrous alloys. High electrical and thermal
conductivity. Nickel-modified silver-copper eutectic. Nickel addition makes the alloy
more sluggish but improves wetting of ferrous alloys. Dissolution of copper, silver or
nickel from base metal increases remelt temperature. Silver-white color.
28
71.5
0.5
Ag
72
Cu
28
Ag–Cu
780
[46]
779.4
[49]
–
BAg-8, BVAg-8, Silvaloy B72, Braze 720, Braze 721 (VTG grade, for vacuum
systems, with reduced volatile impurities), Silver Braze 72. Eutectic. For
nonferrous alloys. Remelt temperature increased by dissolution of copper or silver
from the base metals. High electrical and thermal conductivity. For controlled-
atmosphere fluxless brazing. Very fluid when molten. Limited wetting on nickel and
ferrous metals, poor wetting on carbon steel; in these cases wetting mediated by
copper as iron and nickel are not soluble in silver but are soluble in copper. Wetting
in hydrogen atmosphere is superior to wetting with flux. Mostly used on copper and
nickel alloys. Used with reducing or inert atmospheres or vacuum. Widely used for
joining metalized ceramics to metals in vacuum. White color. Maximum service
temperature 204 °C (intermittently 316 °C).
28
72
Ag
71.7
Cu
28
Li
0.3
Ag–
Cu–Li
760
[46]
–
BAg-8a, Lithobraze 720, Lithobraze BT, Silver Braze 72a High fluidity. For
ferrous and nonferrous alloys. Especially suitable for thin stainless steel. For
general purpose fluxless furnace brazing of stainless steels. Requires hydrogen or
inert atmosphere.
[50]
28
71.7
Li
0.3