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.

phosphorus copper brazing strips applies to automatic brazing Silver contacts or Traverses in Switches; Stator in motors, sunglasses flame,etc.
Phosphorus copper brazing wire 15kg D300 spool for auto parts
Standard Alloy Chemical Composition(%) Melting Range Application
Solidus Liquidus
AWS A5.8 BCuP-2 Cu:Bal.  P:6.5-7.5 710℃ 790℃ For brazing of copper and copper alloys.
AWS A5.8 BCuP-3 Cu:Bal.  P:5.7-6.1  Ag:5.0-5.2 643℃ 816℃ For brazing of copper and copper alloys.
AWS A5.8 BCuP-5 Cu:Bal.  P:4.8-5.3  Ag:14.5-15.5 643℃ 800℃ For brazing of copper,copper alloys,silver and molybdenum etc.
AWS A5.8 BCuP-6 Cu:Bal. P:6.8-7.5  Ag:1.8-2.2 643℃ 790℃ For brazing of copper and copper alloys.
BCu86PSn Cu:Bal. P:6.5-7.5 Sn:6.5-7.5 640℃ 680℃ For brazing of copper and copper alloys.


Rods Round Rods φ1.2-4.0mm    Flat rods: 0.05"x1/8"  Square rods: 2.0x2.0mm, 3.2x3.2mm,  Length: 50-1000mm
Wires Round wires: φ0.8-1.6mm    Flat wires: Thickness: 0.12-0.3mm, Width:1.0-2.5mm    D300 Spools and Coils
Strips Thickness: 0.2-1.0mm   Width: 1.3-100mm
Rings Min. inner diameter: 2.5mm