iten
Head Quarter
Head Quarter
Warehouse
Factory
+39 02 907 81 812 Via Friuli, 5 20072 Fizzonasco di P.E. - Milano - Italy
Via Privata Vico Veneto, 32/5 20072 Fizzonasco di P.E. - Milan - Italy
Via Martiri Della Resistenza, 6 20072 Fizzonasco di P.E. - Milano - Italy
Ceritification
ISO 9001:2015
Made In Italy
#1 in Europe
Supplier
Worldwide
Contact Us

COPPER AND PHOSPHORUS ALLOYS

COPPER AND PHOSPHORUS ALLOYS

Copper-phosphorus and copper-phosphorus-silver alloys are widely used in copper and copper alloy brazing. They can also be used without flux thanks to the presence of phosphorus, with the exception of copper/brass and copper/bronze welds.

The addition of silver guarantees a greater alloy ductility, allows for a reduced melting point and increases electrical conductivity in the alloy.

These brazing alloys are not recommended for use in the presence of steels and alloys with a high nickel content. Otherwise, the joint welding will be very fragile.

SALDFLUX produces two different types of copper-phosphorus alloy. FOS® and SILVERFOS® alloys are for general use, with excellent flowability, while DULLFOS® alloys are highly recommended in the refrigeration sector or where the brazing gap is larger.

FOS - SILVERFOS - DULLFOS®
Name
Composition
ISO17672ISO3677Temp. Fusion °C
AgCuPSn
FOS 677-8677CuP 386-c.a. 650 - 700° C
FOS 60-946-CuP 179-c.a. 710 - 890°C
FOS 70-937-CuP 180-c.a. 710 - 820°C
FOS 80-928-CuP 182-c.a. 710 - 770°C
SILVERFOS 2020,293,26,6--B-Cu94PAgc.a. 710 - 790°C
SILVERFOS 2040,493,66--B-Cu94PAgc.a. 710 - 790°C
SILVERFOS 2291,76,3-CuP 279-c.a. 645 - 825°C
SILVERFOS 2802917-CuP 280-c.a. 643 - 788°C
SILVERFOS 55896-CuP 281-c.a. 645 - 815°C
SILVERFOS 66877-CuP 283-c.a. 643 - 813°C
SILVERFOS 1515805-CuP 284-c.a. 645 - 800°C
SILVERFOS 1818757-CuP 285-c.a. 643 - 666°C
DULLFOS® 70-937-CuP 180-c.a. 710 - 925 °C
DULLFOS® 22626-CuP 279-c.a. 645 - 825 °C
DULLFOS® 55896-CuP 281-c.a. 645 - 815 °C
DULLFOS® 1515855-CuP 284-c.a. 650 - 800 °C
SILVERFOS 525887CuP 282c.a. 645 - 771 °C

Request a quote for this product