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Highly Recommended Silver based Brazing Paste

Short Description:

NMT brazing pastes consist of a filler metal alloy in powder form and where appropriate a flux. These components are held together in a uniform paste by a specially formulated binder system. The end product is a custom made brazing or soldering solution that can offer unique benefits. In particular brazing and soldering pastes are used in production where there is a need to manufacture large numbers of joints.

MMT Brazing paste is mainly used for welding Assemblies of low-voltage electrical appliances, and suitable brazing paste is selected for unused assemblies according to different welding processes.


Product Detail

Silver Base Brazing Paste Application

Silver brazing is a joining process whereby a non-ferrous filler metal, alloy is heated to melting temperature (above 800°F) and distributed between two or more close-fitting parts by capillary attraction.

The main components of silver brazing paste include silver powder, welding agent and auxiliaries. Silver powder is a key component that provides electrical and thermal conductivity, which is able to fill the voids of brazed spots and melt at high temperatures. The welding agent is used to clean and remove the oxide layer and promote the connection of the brazed points. The role of additives is to improve welding quality, reduce oxidation and enhance the strength and reliability of brazed connections.

Applicable to silver, silver and copper and copper alloys; Low carbon steel, low alloy steel, stainless steel, high temperature nickel base alloy, refractory metal and all kinds of electric contact materials brazing.

Cadmium Free Silver Brazing Alloys (BAg)

NMT Number

AWS Number

Ag

Cu

Zn

Sn

Solidus temperature

Liquidus Temperature

NMT-101

BAg-9

65

20

15

/

670℃

720℃

NMT-102

BAg-7

56

22

17

5

620℃

655℃

NMT-103

BAg-5

45

30

25

/

663℃

743℃

NMT-104

BAg-36

45

27

25

3

640℃

680℃

Copper Brazing Paste Application

Suitable for brazing copper and copper alloys and silver or copper based electrical contact materials; Widely used in motor, electrical, refrigeration equipment and instrument industry; Cannot be used for welding steel, nickel-based alloys or copper-nickel alloys containing ≥10% nickel.

Cadmium Free Silver Brazing Alloys (BAgCuP)

NMT Number

AWS Number

Ag

Cu

P

Solidus temperature

Liquidus Temperature

NMT-201

BCuP-5

15

20

15

640℃

800℃

NMT-202

BCuP-8

18

22

17

643℃

666

NMT-203

-

25

30

25

650

720


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