Cadmium free silver brazing alloys

Cadmium free silver brazing alloys

silver brazing wire

silver brazing wire

silver brazing foil and strip

silver brazing foil strip

silver brazing Rings

silver brazing Ring

silver brazing Rods

silver brazing Rod

silver brazing Rings and discs

 silver brazing Ring's and disc's

silver brazing fluxes

 silver brazing fluxes

A) SILVER BRAZING ALLOYS - Without Cadmium

KRANTI CODE Composition % By Weight Melting Range

-

Ag Cu Zn Ni

Sn

Solids

Liquids

KM72

72 28 - -

-

780

780

KM61

61 29 10 -

-

690

735

KM56ZC

56 22 17 -

5

619

652

KM56N

56 42 - 2

-

770

895

KM50NWC

50 20 28 2

-

660

705

KM45

45 57 25 -

3

640

680

KM40SN

40 30 28 -

3

648

709

KM38N

38 32 28 - 2 648 720

KM30 Ni

30 37 32 1 - 675 780

KM34SN

34 36 27.5 - 2.5 630 730

 

  • KM 72 - Eutectic alloy used in Vacuum / Furnace Brazing.
  • KM 61 - Extensively used in Electrical Industry for Brazing of Contacts.
  • KM56ZC ,KM45 ,KM34SN - Cadmium free alloy for food handling industry.
  • KM56 N - Zinc free alloy for furnace brazing of SS components
  • KM50 NWC - Cadmium free Brazing alloy for Carbide Tip Tools under go PVD Coating.

B) SILVER BRAZING ALLOYS - Contain Cadmium

KRANTI CODE Composition % By Weight Melting Range

-

Ag Cu Zn Cd Ni

Sn

Solids

Liquids

KM43

43 16 20 21 -

-

615

620

KM35

35 26 21 18 -

-

607

702

KM40ZC

40 19 21 20 - - 595 630
KM38N 38 32 28 - - 2 648 720
KM30 30 27 23 20 - - 607 710
KM30 Ni 30 37 32 - 1 - 675 780
KM30 NC 31 32.5 15.5 19.5 1.5 - 675 695
KM25 WN 25 30 27.5 17.5 - - 605 720
KM21 21 35 27 17 - - 620 730
KM20 20 38 26 16 - - 610 740

 

As above products are general purpose Silver Brazing Alloy.

  • KM 43 - Lowest melting, High flow low cost brazing alloy which form very superior brazing joints having very small clearances.
  • KM 35 - Similar to KM43 but slightly sluggish flow suitable for clearances form 0.05 to 0.15 mm
  • KM30, KM25, KM 21,KM 20 - Sluggish flow, low cost brazing alloys mainly used in Refrigeration Industry.
  • KM40 ZC, KM30 NC, KM38 - Medium range, low temp brazing alloy for compressor application.
  • KM30 NI, KM 40 NI - Higher temperature brazing alloys for Copper to MS joints mainly find application in Compressor Industries.

C) Brazing Products for Joining of Carbide To Steel

KRANTI CODE Composition % By Weight Melting Range

-

Ag Cu Zn Cd Ni Mn Co Sn

Si

Solids Liquids

KM50

50 15.5 15.5 16 3 - - -

-

632 688

KM50NWC

50 20 28 - 2 - - -

-

659

707

KM49

49 16 23 - 4.5 7.5 - -

-

625

705

KM49Cu

49 27.5 20.5 - 0.5 2.5 - -

-

670

690

KM40 Ni

40 30 28 - 2 - - -

-

670

75

KM43

43 16 20 21 - - - -

-

615

779

KM31Ni

31 32.5 15.5 19.5 1.5 - - -

-

675

695

KMCM27

27 38 20 - 5.5 9.5 - -

-

680

840

KM25N

25 58 6.5 9 1.5 - - -

-

720

840

KM20N

20 35 26 17 2 - - -

-

652

850

KMCMF

- 57.5 38.5 - - - 2 2

-

870

930

KMCuN

- 96.7 - - 2.5 0.2 - 0.6

-

1090

1100

KMNB10

- 49 40.7 - 10 - - -

0.3

920

980

 

  • KM50 - Most extensively used alloy for Cutting Tools.
  • KM50 NWC, KM49, KM49Cu - These alloys are used for brazed Tools which are further subjected to PVD Coating.
  • KM40 Ni - Popular alloy for Diamond Cutter.
  • KM43 - This alloy is very much suitable for joining of carbide in Work Rest Blades.
  • KMCM27 - This alloy is used in Mining Tools like Buttons Bits, Coalagur Drills, Coal Picks etc. This alloy is also used in joints of carbide for Deburring Tools.
  • KM25 N, KM20 N - High temperature brazing alloys specially used for Deburring Tools.
  • KMCMF - This alloy is equivalent to "F" Bronze alloy and used in manufacturing of Drills Rods.
  • KMCuN - This alloy is popular recognized as Copper Brazing Strip and used in joining of Carbide for Drill Rods.
  • KMNB10 - Very much suitable for Masonary Drills.