Copper Brazing Welding Rods for Refrieration Parts

Aluminum base brazing alloys

Alloy

Other alloys Standards

Chemical Composition

Melting Range

°C

σ N/mm²

Si %

Cu %

Zn %

Mg %

The other

Al %

Solidus

°C

Liquidus

°C

BAl88Si

BAlSi-4

11.0

-13.0

/

/

/

/

The rest

577

582

582-604

147-157

BAl67CuSi

5.5

-6.5

27

-29

/

/

/

525

535

535-550

BAl86SiCu

BAlSi-3

9.3

-10.7

3.3

-4.7

/

/

/

521

585

571-604

245-294

BAl76SiCuZn

BAl-0

9.5

-10.5

3.5

-4.5

9.5

-10.5

/

/

515

560

560-600

245-294

BAl88SiMg

BAl-7

9.0

-10.5

/

/

1.0

-2.0

/

559

591

588-604

B62

3.0

-4.0

19

-21

24

-26

/

Mn1.5

480

500

500-550

Y-1

BAl-7

9.0

-10.5

3.0

-4.5

5.0

-7.0

/

0.1

525

555

570-590

225

Phos-Copper Brazing alloys

DESCRIPTION:Phos-Copper brazing alloys's main materials are copper and phosphorus,it has the characters of easily-flowing, low cost, and perfect welding effect.Needn't to use flux when brazing copper and silver objects, the joints have good strength.

Alloy

Corresponding Alloy

Chemical Composition

Melting Range

Main Features

Typical Application

P%

Sn%

Cu%

Solidus°C

Liquidus°C

JCuP

-1

201
BCu92P
TC-310D

7.5

-8.5

The balance

710

780

Close to eutectic crystal composition, low melting point, easy flow, can flow into a small clearance of brazing seam.

Use for copper and copper alloy parts, refrigeration compressor, not suitable for brazing attacking shocking bend parts

JCuP

-2

   BCu93P   

Bcup-2
TC-310A

6.5

-7.5

The balance

710

800

Contain a little phosphorus, has better plastic nature, a little higher melting point.

Use for copper and copper alloy parts, suitable for air conditioning, refrigerator, evaporator, heat exchanger and water heater ect.

JCuP

-3

202

6.1

-6.8

The balance

710

820

Contain a little phosphorus, good plastic nature, a little higher melting point.

Can make many kinds of brazing ring, wires, brazing copper and copper and copper alloy parts, brazing ample clearance tie-in.

JCuP

-3Sn

BCu88PAg
Degussa86

6.5

-7.5

6.5

-

7.5

The balance

640

680

Good spread ability, good caulking ability.

Use for many kinds of copper and copper alloy.

JCuP

-5Sn

BCu86SnP

4.8

-5.8

7.0

-

8.0

The balance

620

670

Low melting point, easy flow.

Use for copper or brass parts of water heater, radiant heating, radiant heating ect.