Code

Related Standard

Chemical Composition

Melting Temperature

Major Characteristic

Typical Application

P%

Sn%

Cu%

Solidus℃

Liquidus℃

JCuP-1

CWA:BCu92P

7.5-8.5

——

REM

710

780

Close to eutectic composition, low melting point, good fluidity, fill into small clearance of brazing seam

Suitable for brazing copper with copper alloy parts, in refrigerator, Fuel gas appliances, etc. Should not be in shock and vibration welding bent parts.

JCuP-2

CWA:BCu93P

AWS:BCuP-2

6.5-7.5

——

REM

710

800

lower phosphorus content; improve plasticity, higher melting point.

Suitable for brazing copper with copper alloy in air-conditioners, refrigerators, evaporator, heat exchanger, water heater, etc. can be made welding ring, brazing medium gap joints.

JCuP-3

6.1-6.8

——

REM

710

820

Lower phosphorus content; good plasticity, higher melting point.

Can be made kinds of welding rings, flat wires, Suitable for brazing copper with copper alloy parts, and brazing large gap-joints.

JCuP-3Sn

CWA:BCu88PAg
DVS:Degussa86

6.5-7.5

6.5-7.5

REM

640

680

Good spreading property and clearance fill-ability

Suitable for brazing kinds of copper with copper alloy.

JCuP-5Sn

CWA:BCu86SnP

4.8-5.8

7.0-8.0

REM

620

670

Low melting point and good fluidity.

Suitable for brazing copper and brass parts in water heater, electric heater, sanitary appliance, etc.