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| 一、 Note the use of |
The sliver-base filler metals are a kind of brazing filler metals of sliver or sliver-base solid solution, with excellent
usability , low melting point , good wettability , great strength , good plasticity , contact and corrosion-resisting . They can be used to brazed all ferrous and nonferrous metals , such as stainless steel , hard alloy etc . At present , they are applied on the fields such as refrigerator , air conditioner , lamps and lantems , instruments and meters , electrical equipments chemical industry and aerospace industry etc.
In order to decrease melting point and the content of sliver , adding copper, zinc , admium , tin , nickel etc. elements
to them consists of three elements or many elements alloy filler metals .These products can adopt all kinds of brazing methods .Generally speaking , you should make up the brazing flux in order to get good braze but for the vacuum state operation and the shield gas state operation .
The sliver base filler metals include "with cadmium" and without cadmium .The sliver base filler metals with
cadmium have a little toxicity .These products can't be applied on the brazed joints which are directly connected with food , drinking water . The working place must wind .
Before brazing , you must clear away all dirt on the brazing place and on the surface of object to be brazed such as
greasy dirt . oxide, and so on , the best brazed joints space are between 0.03mm to 0.075mm .
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| 二、 Product specifications |
1、 he brazing wires series :
The plate-shaped brazing wires whose diameters are between 0.5mm to 3.0mm .
2、 The brazing rods series:
The welding rods whose diameters are between 0.7mm to 3.0mm and the flat welding rods whose specification
is 1.3×3.15mm .
3、 The belt brazing metal series:
The belt metals and the flat metals whose thickness is between 0.1mm to 0.25mm , the minute belt metals whose thickness is between 0.1 to 0.3 mm .
4、 The brazing rings series:
Various specifications brazing rings whose diameters are between 0.8mm to 2.5mm and whose internal diameters are more than 3.5mm .
The basic data of silver base series filler metals（1）
|
Brazing Alloys
|
Chemical Composition（%）
|
Melting Range℃
|
Working Temperature℃
|
Trensile σbN/mm2
|
Equal to foreign alloy standards
|
|
Ag
|
Zn
|
Cu
|
All impurities
|
Solidus
|
Liquidus
|
|
BAg10CuZn
|
9.0~11.0
|
36~38
|
Bal
|
<0.10
|
815
|
850
|
850~930
|
451
|
|
|
BAg20CuZn(Si)
|
19~21
|
34~38
|
690
|
810
|
810~880
|
|
U.S.A DIA-230
|
|
BAg25CuZn
|
24~26
|
33~37
|
700
|
790
|
800~870
|
353
|
Japan JISZ.BAg-20A
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|
BAg30CuZn
|
29~31
|
30~34
|
677
|
766
|
766~871
|
|
U.S.A BAg-20
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|
BAg45CuZn
|
44~46
|
23~27
|
665
|
745
|
743~843
|
386
|
U.S.A BAg-5
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|
BAg50CuZn
|
49~50
|
14~18
|
690
|
775
|
750~850
|
343
|
U.S.A BAg-6
|
|
BAg72CuZn
|
71~73
|
/
|
779
|
779
|
779~890
|
340
|
U.S.A BAg-8
|
The basic data of silver base series filler metals（2）
|
Brazing Alloys
|
Chemical Composition（%）
|
Melting Range℃
|
Working Temperature℃
|
Trensile σbN/mm2
|
Equal to foreign alloy standards
|
|
Ag
|
Zn
|
Sn
|
Cu
|
All impurities
|
Solidus
|
Liquidus
|
|
BAg18CuZnSn
|
17~19
|
32~34
|
1.5~2.5
|
Bal
|
<0.10
|
780
|
810
|
810~920
|
|
German
Degussa1876
|
|
BAg25CuZnSn
|
24~26
|
32~34
|
1.5~2.5
|
680
|
760
|
760~850
|
|
German
Degussa2576
|
|
BAg30CuZnSn
|
29~31
|
31~33
|
1.5~2.5
|
650
|
750
|
740~840
|
|
German
Degussa3076
|
|
BAg34CuZnSn
|
33~35
|
26~28
|
2.5~3.5
|
630
|
730
|
730~800
|
|
German
Degussa3476
|
| BAg38CuZnSn |
37~39 |
26~30 |
1.5~2.5 |
650
|
720
|
|
|
|
|
BAg40CuZnSn
|
39~41
|
29~31
|
1.5~2.5
|
650
|
710
|
|
|
|
|
BAg45CuZnSn
|
44~46
|
23.5~27.5
|
2.0~3.0 |
|
|
640
|
680
|
680~750
|
|
German
Degussa4576
|
|
BAg56CuZnSn
|
55~57
|
15~19
|
1.5~2.5
|
|
|
620
|
655
|
|
|
|
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BAg56CuZnSn
|
55~57
|
15~19
|
4.5~5.5 |
|
|
618
|
652
|
650~760
|
330
|
U.S.A
BAg-7
|
| BAg60CuZnSn |
59~61 |
12~16 |
2.0~4.0 |
|
|
620
|
685
|
|
|
|
The basic data of silver base series filler metals(3)
|
Brazing Alloys
|
Chemical Composition（%）
|
Melting Range℃
|
Working Temperature℃
|
Trensile σbN/mm2
|
Equal to foreign alloy standards
|
|
Ag
|
Zn
|
Cd
|
Cu
|
All impurities
|
Solidus
|
Liquidus
|
|
BAg12CuZnCd
|
11~13
|
29~32
|
5~9
|
Bal
|
<0.10
|
620
|
825
|
800~880
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|
L-Ag12Cd
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BAg15CuZnCd
|
14~16
|
28~30
|
11~13
|
720
|
790
|
800~860
|
|
|
|
BAg18CuZnCd
|
17~19
|
27~29
|
14~16
|
640
|
745
|
745~850
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|
U.S.A
DIA-148
|
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BAg20CuZnCd
|
19~21
|
24~26
|
13~17
|
605
|
765
|
760~810
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|
German
L-Ag20Cd
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BAg25CuZnCd
|
24~26
|
26.5~28.5
|
16.5~18.5
|
607
|
682
|
690~790
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|
U.S.A
BAg-33
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|
BAg30CuZnCd
|
29~31
|
20~22
|
19~23
|
600
|
690
|
690~800
|
|
German
L- Ag30Cd
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|
BAg34CuZnCd
|
33~35
|
23~25
|
19~21
|
595
|
630
|
630~750
|
|
German
Degussa3464
|
|
BAg35CuZnCd
|
34~36
|
19~23
|
17~19
|
605
|
700
|
700~845
|
450
|
U.S.A
BAg-2
|
|
BAg40CuZnCd
|
39~41
|
20~22
|
18~22
|
595
|
630
|
630~750
|
400
|
German
L-Ag40Cd
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|
BAg45CuZnCd
|
44~46
|
14~18
|
23~25
|
607
|
619
|
620~760
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U.S.A
BAg-1
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BAg50CuZnCdNi
|
49~51
|
13.5~17.5
|
15~17
|
Ni2.5~3.5
|
632
|
688
|
690~815
|
420
|
U.S.A
BAg-3
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