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Brazing Fluxes

Cadmium-free silver brazing alloys


Silver base brazing filler metals, with excellent processing property, optimal melting temperature, good wetting and seam-forming property, high joint strength and ductility,good corrosion resistance, have been widely used in brazing mild steel, stainless steel, Structural Steel, refractory alloys, copper and its alloys, cemented carbides and Kovar alloys,etc.In order to improve performance and satisfy the increasingly serious technical requirement,the silver base filler metal we usually use is added Sn, Ni, Si, Mn, In, Ga to form Ag-Cu-Zn-Sn, Ag-Cu-Zn-Ni, Ag-Cu-Zn-Mn, Ag-Cu-Zn-X(Ga, Sn, In, Ni) series product and so on.

Attention:The residue such as grease,oxide etc on the surface and connection must be removed strictly before the brazing.

 

中国标准牌号
Chinese Standard
相当牌号
Equivalent Grade
化学成分(Wt%)
Composition
熔化温度范围(℃)
Melting Range
主要特性及用途
Characteristics and Application
产品样本牌号 AWS A5.8 Ag Cu Zn Sn 其他
Rest
固相线
Solidus
液相线
Liquidus
B-Ag10CuZn 料301 ___ 9.0

11.0
52.0

54.0
36.0

38.0
___ ___ 815 850 价格便宜,熔点较高,钎焊接头延性较差,用于钎焊要求较低的铜及铜合金、钢等。
B-Ag25CuZn 料302 ___ 24.0

26.0
40.0

42.0
33.0

35.0
___ ___ 700 800 用于要求钎缝表面粗糙度细,强度高,振动载荷的工件,钎料具有良好的润湿作用和填充能力,钎焊铜及铜合金、钢和不锈钢等。
B-Ag30CuZn ___ BAg-20 29.0

31.0
37.0

39.0
30.0

34.0
___ ___ 677 766 漫流性好,钎焊铜及铜合金、钢及不锈钢等,接头强度高。
B-Ag45CuZn 料303 BAg-5 44.0

46.0
29.0

31.0
23.0

27.0
___ ___ 665 745 熔点低,润湿性及填缝能力好,接头强度高,能承受振动载荷,在电子、电力和食品等行业中得到广泛应用。
B-Ag50CuZn 料304 BAg-6 49.0

51.0
33.0

35.0
14.0

18.0
___ ___ 690 775 用于要求钎缝表面粗糙度细,强度高,能承受振动载荷的工件,且可用于钎焊间隙不均匀或圆角较大的零件。
B-Ag70CuZn ___ BAg-10 69.0

71.0
19.0

21.0
8.0

12.0
___ ___ 690 740 熔点低,润湿性及填缝能力好,接头强度高,能承受振动载荷,钎缝表面光滑,特别适宜于钎焊要求导电性高的工件。
B-Ag25CuZnSn ___ BAg-37 24.0

26.0
39.0

41.0
31.0

35.0
1.5

2.5
___ 688 780 漫流性好,钎缝较光洁,钎焊铜及铜合金、银镍合金、钢及不锈钢。
B-Ag30CuZnSn 料310 ___ 29.0

31.0
35.0

37.0
30.0

34.0
1.5

2.5
___ 650 750 熔点低,漫流性好,可钎焊铜及铜合金、钢及不锈钢、邦迪管等。
B-Ag34CuZnSn ___ ___ 33.0

35.0
35.0

37.0
25.0

29.0
2.5

3.5
___ 630 730 熔点低,润湿性及填缝性较好,可钎焊铜及铜合金,碳钢、不锈钢及邦迪管等。
B-Ag40CuZnSnNi 料322 ___ 39.0

41.0
24.0

26.0
29.5

31.5
2.7

3.3
Ni
1.30

1.65
634 640 熔点低,镍和锡的加入可替代镉的作用,一般用于钎焊铜及铜合金,碳钢、不锈钢等。
B-Ag56CuZnSn 料316 BAg-7 55.0

57.0
21.0

23.0
15.0

19.0
4.5

5.5
___ 620 650 替代含镉银钎料,用于钎焊铜、钢、镍及其合金,一般用于食品行业或需要颜色匹配场合。
B-Ag30CuZnIn ___ ___ 29.0

31.0
37.0

39.0
25.5

28.5
___ In
4.5

5.5
640 755 In的加入降低了熔点,提高了钎料的流动性和润湿性,一般用于制冷压缩机铜和钢的钎焊。
B-Ag34CuZnIn ___ ___ 33.0

35.0
34.0

36.0
28.5

31.5
___ In 
0.8

1.2
660 740 熔点低,流动性和润湿性较好,常用于代替BAg34CuZnSn在制冷压缩机制造中钎焊铜和钢。
B-Ag40CuZnIn ___ ___ 39.0

41.0
29.0

31.0
23.5

26.5
___ In
4.5

5.5
635 715 熔点较低,流动性和润湿性好,常用于代替BAg45CuZn在制冷压缩机制造中钎焊铜和钢。
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