5286 RB brazing alloy

5286 RB

Low-viscosity brazing alloy based on copper-silver-phosphorus with a high degree of purity. Very smooth melting behavior. Narrow melting interval and low soldering temperature. Very good flow properties, optimum wetting. High strength and elongation. Smooth, dense and pore-free seams. The solder has a deoxidizing effect on copper, so no flux is required. Permissible operating temperatures up to 150 °C. Cold-resistant down to approx. - 40 °C.

Technical data
Brazing alloy
ISO 17672: CuP 281
EN 1044: CP 104
DIN 8513: L-Ag5P

Melting interval (Sol./Liq.) [°C]: 650 - 810
Soldering temperature [°C]: ~ 710
Elongation [%]: 8.0
Density [g/cm³]: 8.2

Applications
For joint and gap soldering, also in series production, e.g: Copper (SF-Cu), gunmetal, bronze (CuSn alloys), brass (CuZn alloys), nickel silver (CuNiZn alloys), Al-bronze (CuAl alloys). For joining thin-walled workpieces and workpieces with different wall thicknesses.

Typical applications are
Rotors of electric motors, pipe connections, pipe coils, copper connections of cooling systems, sanitary systems, apparatus for air conditioning systems, heating installations. Not to be used with media containing sulphur or on iron or nickel alloys.

Processing instructions
Clean soldering areas. Round off edges. Coat soldering surfaces with flux. Heat the tip of the soldering rod and dip it into the flux. Preheat the workpiece widely and continuously. Set a neutral flame. Do not overheat. Remove corrosive flux residues.
Heat sources: Flame soldering (acetylene; neutral), furnace, induction and resistance heating, TIG.

Delivery form
Castolin RB 5286: bare solder rods, round