Phosphorus Copper Alloys

Phosphorus Copper

The Phosphorus Copper alloys are extensively used to join copper and copper alloy base metals (brass, bronzes). Phos-Copper is extensively used in Non-Ferrous
They have self-fluxing properties when used on copper and may or may not contain Silver.
Continuous service operating temperatures of joints brazed with these alloys range up to approx 200 °C.
Corrosion resistance is satisfactory, except when the joints are exposed to sulfurous environments, especially at elevated temperatures.
Phosphorous Copper alloys should not be used on ferrous, nickel based alloys, or copper-nickel alloys with more of 10% nickel, in order to avoid premature failure of the joint due to the formation of brittle intermetallic phases.

StandardAlloyChemical Composition(%)Melting RangeApplication
AWS A5.8BCuP-2Cu:Bal.  P:6.5-7.5710℃790℃For brazing of copper and copper alloys.
AWS A5.8BCuP-3Cu:Bal.  P:5.7-6.1  Ag:5.0-5.2643℃816℃For brazing of copper and copper alloys.
AWS A5.8BCuP-5Cu:Bal.  P:4.8-5.3  Ag:14.5-15.5643℃800℃For brazing of copper,copper alloys,silver and molybdenum etc.
AWS A5.8BCuP-6Cu:Bal. P:6.8-7.5  Ag:1.8-2.2643℃790℃For brazing of copper and copper alloys.
BCu86PSnCu:Bal. P:6.5-7.5 Sn:6.5-7.5640℃680℃For brazing of copper and copper alloys.


RodsRound Rods φ1.2-4.0mm    Flat rods: 0.05″x1/8″  Square rods: 2.0×2.0mm, 3.2×3.2mm,  Length: 50-1000mm
WiresRound wires: φ0.8-1.6mm    Flat wires: Thickness: 0.12-0.3mm, Width:1.0-2.5mm    Spools and Coils
StripsThickness: 0.2-1.0mm   Width: 1.3-100mm
RingsMin. inner diameter: 2.5mm