Brazing
Cadmium-free silver based alloys
They are low temperature brazing alloys, for general use and suitable for joining base materials such as iron, carbon steel, stainless steel, copper, nickel, and the alloys of these metals.
Given the fluidity and excellent capillary penetration capacity, they ensure joints with excellent mechanical characteristics and resistance to pressure and vibrations.
- Fluidity.
- Excellent capillary penetration capacity.
- Excellent mechanical characteristics.
Delivery date for Brazing Bare and Coated rods Ø 1,00; 1,50; 2,00 x 500 mm (1 kg carton boxes) from Prague warehouse: 2 days.
Other Brazing alloys and form (wires, rings, strips, preforms, pastes, powders, etc.) on request from production within 4 weeks.
| Silver Brazing Alloy |
Current Standard ISO 17672 |
Composition % | Melting Range [°C] |
Operation Temperature [°C] |
Recommended Ecological Flux |
||||
|---|---|---|---|---|---|---|---|---|---|
| Ag | Cu | Zn | Sn | Other Elements | |||||
| GalFlo 12 | Ag 212 | 12 | 48 | 40 | – | Si 0,05/0,25 | 800-830 | 830 | Cleantech XHT |
| GalFlo 20 | Ag 220 | 20 | 44 | 36 | – | Si 0,05/0,25 | 690-810 | 810 | Cleantech XHT |
| GalFlo 25Sn | Ag 125 | 25 | 40 | 33 | 2 | Si 0,05/0,25 | 680-760 | 750 | Cleantech SHT |
| GalFlo 30Sn | Ag 130 | 30 | 36 | 32 | 2 | – | 665-755 | 740 | Cleantech SHT |
| GalFlo 34Sn | Ag 134 | 34 | 36 | 27 | 3 | – | 630-735 | 710 | Cleantech SHT |
| GalFlo 40Sn | Ag 140 | 40 | 30 | 28 | 2 | – | 650-710 | 690 | Cleantech SHT |
| GalFlo 44 | Ag 244 | 44 | 30 | 26 | – | – | 675-735 | 730 | Cleantech SHT |
| GalFlo 45Sn | Ag 145 | 45 | 27 | 25 | 3 | – | 640-680 | 670 | Cleantech SHT |
| GalFlo 49MnNi | Ag 449 | 49 | 16 | 23 | – | Mn 7,5/Ni 4,5 | 670-690 | 690 | Cleantech X85 |
| GalFlo 55Sn | Ag 155 | 55 | 21 | 22 | 2 | – | 630-660 | 660 | Cleantech XLT |
| GalFlo 56Sn | Ag 156 | 56 | 22 | 17 | 5 | – | 620-655 | 650 | Cleantech XLT |
| GalFlo 60Sn A | Ag 160 | 60 | 30 | – | 10 | – | 600-730 | 720 | Cleantech XLT |
Copper phosphorus and copper phosphorus silver alloys
They are successfully and widely used in sanitary piping systems because, not containing zinc, they do not incur the risk of “dezincification”. The presence of phosphorus greatly helps to reduce the formation of oxides during the heating and brazing process. The addition of silver, in addition to phosphorus, guarantees a better mechanical resistance of the joint (especially in tensile stress), these alloys cause a slight loss of wettability during brazing. Brazing of these alloys is carried out through rapid heating with a torch thanks to their high thermal conductivity.
The use of copper alloys is also possible for materials such as brass and bronze, taking care to use/apply an appropriate flux.
- No Zinc / Phosphorus / + Silver / + Copper.
Delivery date for Brazing Bare rods Ø 1,50; 2,00; 2×2; 3,00 x 500 mm, (1 kg carton boxes) from Prague warehouse: 2 days.
Technology: Standard, NANOTECH and NANOTECH PLUS.
Other Brazing alloys and form (wires, rings, strips, preforms, pastes, powders, etc.) on request from production within 4 weeks.
| Brazing Alloy NANOTECH |
Current Standard ISO 17672 |
Composition % | Melting Range [°C] |
Operation Temperature [°C] |
Recommended Ecological Flux |
|||
|---|---|---|---|---|---|---|---|---|
| Ag | Cu | P | Sn | |||||
| GalFlo CuP6 | CuP 179 | – | 94 | 6 | – | 710-890 | 760 | not needed when Brazing Cu-Cu |
| GalFlo CuP7 | CuP 180 | – | 93 | 7 | – | 710-820 | 730 | not needed when Brazing Cu-Cu |
| GalFlo CuP7,3 | CuP 181 | – | 92,7 | 7,3 | – | 710-793 | 730 | not needed when Brazing Cu-Cu |
| GalFlo CuP8 | CuP 182 | – | 92 | 8 | – | 710-770 | 720 | not needed when Brazing Cu-Cu |
| GalFlo CuPAg2 | CuP 279 | 2 | 91,8 | 6,2 | – | 645-825 | 740 | not needed when Brazing Cu-Cu |
| GalFlo CuPAg5 | CuP 281a | 5 | 88,8 | 6,2 | – | 645-815 | 710 | not needed when Brazing Cu-Cu |
| GalFlo CuPAg15 | CuP 284 | 15 | 80 | 5 | – | 645-800 | 700 | not needed when Brazing Cu-Cu |
| GalFlo CuP7Sn7 | CuP 386 | – | 86 | 7 | 7 | 650-700 | 700 | not needed when Brazing Cu-Cu |
Brass alloys
Brazing with brass alloys, because of its high atomic-scattering capacity, is used for the characteristic of being better able to conceal the brazing itself and therefore improve the aesthetic appearance of the joint, a joint which is hidden from view.
It is therefore particularly appreciated when making brass furniture or brass display accessories.
- Joint aesthetics
Delivery date for Brazing Bare rods Ø 1,50; 2,00; 2,50; 3,00; 4,00; 5,00 x 1000 mm, (10 kg carton boxes MQO) from Prague warehouse: 2 days.
Delivery date for Brazing Coated rods Ø 2,00; 3,00 x 500 mm, (1 kg carton boxes) from Prague warehouse: 2 days.
Other Brazing alloys and form (wires, rings, strips, preforms, pastes, powders, etc.) on request from production within 4 weeks.
| Brass
Brazing Alloy |
Current Standard ISO 17672 |
Composition % | Melting Range [°C] |
Operation Temperature [°C] |
Recommended Ecological Flux |
||||
|---|---|---|---|---|---|---|---|---|---|
| Cu | Zn | Ag | Si | Other Elements | |||||
| GalFlo 01 | – | 60 | 39 | 1 | – | – | 890-900 | 900 | Cleantech Bronze |
| GalFlo OT Si | Cu 470a | 59,5 | 40,2 | – | 0,3 | – | 875-895 | 900 | Cleantech Bronze |
Aluminium alloys
These alloys are suitable for brazing aluminum with other materials.
They find their main application in the sectors of refrigeration and air-conditioning, automotive and the hobby sector.
- Aluminium Brazing.
Delivery date for Flux Cored rods (non-corrosive flux) Ø 2,00 x 5,00 mm, (1 kg carton boxes) from Prague warehouse: 2 days.
Delivery date for Flux Cored wires (non-corrosive flux) Ø 2,00 x 1000; 2000 mm, (1-2 m coil in plastic pack) from Prague warehouse: 2 days.
Other Brazing alloys and form (wires, rings, strips, preforms, pastes, powders, etc.) on request from production within 4 weeks.
| Aluminium Brazing Alloy |
Current Standard ISO 17672 |
Composition % | Melting Range [°C] |
Operation Temperature [°C] |
Recommended Ecological Flux | |||
|---|---|---|---|---|---|---|---|---|
| Al | Si | Zn | Ag | |||||
| GalFlo AlSi12 Brazing | Al 112 | 88 | 12 | 1 | – | 575-585 | 580 | flux cored rod/wire with non-corrosive flux |
| GalFlo ZnAlAg4 Soldering | – | 17 | – | 79 | 4 | 440-470 | 450 | flux cored rod/wire with non-corrosive flux |
| GalFlo ZnAl2 Soldeing | – | 2 | – | 98 | – | 375-388 | 380 | flux cored rod/wire with non-corrosive flux |