TOP TEC SET - Alloys compatible with ROHS regulation
All TOP TEC alloys present a melting interval under 750ºC.
These alloys are used for their high electric conductivity, for absence of toxicity in food industry, for their ductility in copper and copper alloys manufacturing even on heavy pieces.
These alloys are suitable for all kind of steels, for copper and copper alloys, for nickel alloys.
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TOP TEC 1 Economic alloy but with low silver content; recommended for large series brazing, in condition that heating method is particularly rapid. |
TOP TEC 2 it offers an excellent fluidity but a reduced capillarity. This is recommended for not important joints. |
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TOP TEC 3 This alloy is convenient for all works which need a rapid brazing. This is suitable for cadmium and silver gas pipes assembly. |
TOP TEC 4 Alloy for all usages which offers a great fluidityand an excellent capillarity. This is used for cadmium and silver gas pipes assembly. |
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TOP TEC 5 Alloy widely used due to its low melting point, its good fluidity and its reduced (630 -655 ) melting interval. Alloy for silver, cadmium and white colour. |
| Chemical composition |
Melting Range |
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| Reference | Silver | Copper | Zinc | Solidus | Liquidus | |
| Ag% | Cu% | Zn% | Others | °C | °C | |
| TOPTEC 5 | 50 | yes | yes | Si-Sn | 630 | 655 |
| TOPTEC 4 | 42 | yes | yes | Si-Sn | 640 | 670 |
| TOPTEC 3 | 32 | yes | yes | Si-Sn | 660 | 715 |
| TOPTEC 2 | 20 | yes | yes | Si-Sn | 670 | 740 |
| TOPTEC 1 | 17 | yes | yes | Si-Sn | 660 | 755 |