| Product |
Composition % |
Melting Range |
Tensile Strength |
International Standards |
||||||
| Ag |
Cu |
Zn |
Sn |
ºC |
Kg/mm2 |
EN-1044 |
DIN 8513 |
BS 1845 |
||
| SILWELD 56 |
56 |
22 |
17 |
5 |
620 - 650 |
48 |
AG 102 |
|||
| SILWELD 55 |
55 |
21 |
2 |
2 |
630 - 660 |
44 |
AG 103 |
L-Ag-55 Sn |
Ag-14 |
|
| SILWELD 45 |
45 |
28 |
2 |
2 |
680 - 740 |
44 |
L-Ag-45 Sn |
Ag-5 |
||
| AG 104 |
||||||||||
| SILWELD 40 |
40 |
30 |
28 |
2 |
650 - 710 |
44 |
AG 105 |
L-Ag-40 Sn |
Ag-20 |
|
| SILWELD 34 |
34 |
36 |
27 |
3 |
630 - 730 |
48 |
AG 106 |
L-Ag-34 Sn |
Ag-11 |
|
| SILWELD 30 |
30 |
36 |
2 |
2 |
665 - 755 |
48 |
AG 107 |
L-Ag-30 Sn |
Ag-21 |
|
| SILWELD 25 |
25 |
40 |
33 |
2 |
680 - 760 |
45 |
AG 108 |
L-Ag-25 Sn |
||
| SILWELD 20 |
20 |
44 |
35.9 |
0.1 |
776 - 815 |
43 |
AG 206 |
L-Ag-20 |
||
PRODUCT |
Ag |
FLUIDITY |
DESCRIPTION |
SILWELD 56 |
56% |
8 |
Thin flowing alloy offering excellent fluidity and wetting qualities. Used for the brazing of copper alloys, stainless steel and dissimilar metal combinations. Widely used in the food and medical industries due to no cadmium being present in the alloy. |
SILWELD 55 |
55% |
7.5 |
Very similar alloy to Silweld 56 but with very slightly higher melting range. Used for the brazing of copper alloys, stainless steel and dissimilar metal combinations. |
| SILWELD 45 |
45% |
6.5 |
Slightly more sluggish than the higher silver content alloys. Used for the brazing of stainless steels, copper alloys and dissimilar combinations. |
SILWELD 40 |
40% |
5 |
A more general-purpose alloy widely used in the refrigeration and air conditioning industries. Ideal for poor fitting joints. For the brazing of steel, nickel, and copper alloys and dissimilar combinations. Suitable for wider clearance and yet provides good ductility. |
SILWELD 34 |
34% |
5 |
Moderate temperature and good ductility. Used for the brazing of copper alloys, stainless steel and dissimilar metal combinations. |
SILWELD 30 |
30% |
6 |
An alloy offering good strength and wettability. Ideal for both capillary joints and filled forming applications. |
| SILWELD 25 |
25% |
5 |
For steel and copper alloys. Moderate ductility. |
| SILWELD 20 |
20% |
4 |
For steel and copper alloys. Moderate ductility. For dissimilar metals, joint should be in compression on cooling |
| The higher the fluidity rating, the faster the alloy flows within the melting range. All alloys available in rod, shim, strip and paste. |
|||
Other Alloys Available on Request
All of the above products are available in a fully plasticized flux coating
IF IN DOUBT ON SELECTION PLEASE CALL FOR TECHNICAL ASSISTANCE
The objective and purpose of the Fluxing in the brazing and welding processes is to prevent the formation, dissolve or facilitate the removal of the oxides or any other undesirable substance from the surfaces to be joined. Another fundamental objective of Fluxes is to assure the formation of a perfect brazed joint by protecting the base filler metal from oxidation and to reduce surface tension, allowing a free and perfect flow of the filler alloys.
Product |
Working Range °C |
Description |
SILFLUX 142 |
550 - 800 |
A specially developed flux used in conjunction with all CWB silver brazing alloys. Can be mixed into a paste by adding water. |
SILFLUX 142P |
575 - 825 |
Similar to Silflux 142 but as a ready mixed smooth paste. This Paste has superior time / temp stability and can be used with alloys melting below 800°C. |
SILFLUX 144 |
700 - 1000 |
This is a specially developed flux containing Boric Acid and Borax for the brazing and bronze welding of ferrous metals, copper bearing alloys and nickel bearing alloys. |
SILFLUX 145 |
550 - 650 |
A corrosive flux developed for the brazing of aluminium. Available in powder or paste form |
SILFLUX 146 |
560 - 580 |
Non-corrosive, non-hydroscopic aluminium brazing flux. For most aluminium alloys (Mg & Si <1%) and stainless steels. |
SILFLUX 147 |
150 - 450 |
Formulated for the soft soldering of stainless steel using Sil 96S solder. Flux is manufactured in a paste form with powerful deoxidizing action to give safe, secure joints |
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