Brazing

Cadmium Bearing Alloys

General-purpose, lowest temperature with short melting ranges, free flowing alloys that are versatile, easy to use having high strength. This family of brazing alloy like high silver brazing alloys has excellent flow characteristics and mechanical properties. Being used successfully for the last many decades on nearly all ferrous and non ferrous alloys.

Noble Technologies offers these alloys in a wide range of compositions to suit specific applications. Available in Wires and Rods, Strips, Wire Flattening, Wire Preforms, Strip Preforms, Granules and Spheres. With the help of the chart below, identify and compare alloys of our Silver Based Cadmium Bearing Alloys suited to your needs.

Specifications


Grade of
Brazing Alloy
Nominal Composition % Melting
Range
International
Standards

Ag

Cu

Zn

Cd

Others

°C

DIN:8513

AWS:A5.8


NT SILVER 67Cd

67

11

12

10

-

635-720

L-Ag67Cd

-
Used for brazing of silver goods made of silver alloys.


NT SILVER 50Cd

50

15.5

16.5

18

-

620-640

L-Ag50Cd

BAg-1a
One of the lowest melting point Silver Brazing alloys available. It has excellent flow characteristics. The highest joint strength can be obtained with this alloy. Has better resistance to corrosion in chlorine, sulphur and steam environments.


NT SILVER 45Cd

45

15

16

24

-

605-620

L-Ag45Cd

BAg-1
This has the lowest brazing temperature range of the BAg filler metals. It also flows more freely into narrow clearance capillary joints. Its narrow melting range is suitable for rapid or slow methods of heating.


NT SILVER 44Cd

44

27

13

15

1P

595-660

-

-
Low melting filler metal for brazing electrical contacts and molybdenum or copper-tungsten electrodes.


NT SILVER 43Cd

43

16

20

21

-

615-620

-

-
This has the shortest melting range of any silver brazing alloys. This alloy is regarded as the best brazing alloy by manu brazers. It is particularly recommended where a minimum brazing temperature is desirable to preserve the properties of the parent metals. Ideal where joints have a close fitup and will produce neat joints with optimum ductility and strength.


NT SILVER 40Cd

40

19

21

20

-

595-630

L-Ag40Cd

-
 


NT SILVER 35Cd

35

26

21

18

-

610-700

L-Ag34Cd

BAg-2
A free flowing general purpose brazing alloy. Its broader melting range is helpful where clearances are wide or are not uniform. Unless heating is rapid, care must be taken that the lower melting constituents do not separate out by liquation.


NT SILVER 30Cd

30

28

21

21

-

600-690

L-Ag30Cd

BAg-2
Similar to Silver 40Cd but more economical.


NT SILVER 251Cd

25

30

27.5

17.5

-

605-680

-

BAg-33
Silver 251, 250 & 20Cd have good fillet forming properties with an ability to bridge wide gaps. Their wide melting range limit their applications. Due to their wide melting range they are somewhat more subject to liquation and may require more care during brazing. Therefore, they are not normally recommended for applications with slow heating rates.


NT SILVER 250Cd

25

35

26

14

-

605-745

-

BAg-27
 


NT SILVER 20Cd

20

40

25

15

-

605-765

L-Ag20Cd

-
 


NT SILVER 12Cd

12

50

31

7

-

620-825

L-Ag12Cd

-
Economical alloy with wide melting range. Like above, preferred for applications having short heating cycles to avoid liquation. Ideal for bridging wider gaps where work pieces are insensitive to heat.


NT SILVER 5Cd

5

-

-

7

-

335-392

-

-
Used where alloy having higher melting point and better strength than soft solder is required.