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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.

 

中國(guó)標(biāo)準(zhǔn)牌號(hào)
Chinese Standard
相當(dāng)牌號(hào)
Equivalent Grade
化學(xué)成分(Wt%)
Composition
熔化溫度范圍(℃)
Melting Range
主要特性及用途
Characteristics and Application
產(chǎn)品樣本牌號(hào) AWS A5.8 Ag Cu Zn Sn 其他
Rest
固相線
Solidus
液相線
Liquidus
B-Ag10CuZn 料301 ___ 9.0

11.0
52.0

54.0
36.0

38.0
___ ___ 815 850 價(jià)格便宜,熔點(diǎn)較高,釬焊接頭延性較差,用于釬焊要求較低的銅及銅合金、鋼等。
B-Ag25CuZn 料302 ___ 24.0

26.0
40.0

42.0
33.0

35.0
___ ___ 700 800 用于要求釬縫表面粗糙度細(xì),強(qiáng)度高,振動(dòng)載荷的工件,釬料具有良好的潤(rùn)濕作用和填充能力,釬焊銅及銅合金、鋼和不銹鋼等。
B-Ag30CuZn ___ BAg-20 29.0

31.0
37.0

39.0
30.0

34.0
___ ___ 677 766 漫流性好,釬焊銅及銅合金、鋼及不銹鋼等,接頭強(qiáng)度高。
B-Ag45CuZn 料303 BAg-5 44.0

46.0
29.0

31.0
23.0

27.0
___ ___ 665 745 熔點(diǎn)低,潤(rùn)濕性及填縫能力好,接頭強(qiáng)度高,能承受振動(dòng)載荷,在電子、電力和食品等行業(yè)中得到廣泛應(yīng)用。
B-Ag50CuZn 料304 BAg-6 49.0

51.0
33.0

35.0
14.0

18.0
___ ___ 690 775 用于要求釬縫表面粗糙度細(xì),強(qiáng)度高,能承受振動(dòng)載荷的工件,且可用于釬焊間隙不均勻或圓角較大的零件。
B-Ag70CuZn ___ BAg-10 69.0

71.0
19.0

21.0
8.0

12.0
___ ___ 690 740 熔點(diǎn)低,潤(rùn)濕性及填縫能力好,接頭強(qiáng)度高,能承受振動(dòng)載荷,釬縫表面光滑,特別適宜于釬焊要求導(dǎo)電性高的工件。
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,釬縫較光潔,釬焊銅及銅合金、銀鎳合金、鋼及不銹鋼。
B-Ag30CuZnSn 料310 ___ 29.0

31.0
35.0

37.0
30.0

34.0
1.5

2.5
___ 650 750 熔點(diǎn)低,漫流性好,可釬焊銅及銅合金、鋼及不銹鋼、邦迪管等。
B-Ag34CuZnSn ___ ___ 33.0

35.0
35.0

37.0
25.0

29.0
2.5

3.5
___ 630 730 熔點(diǎn)低,潤(rùn)濕性及填縫性較好,可釬焊銅及銅合金,碳鋼、不銹鋼及邦迪管等。
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 熔點(diǎn)低,鎳和錫的加入可替代鎘的作用,一般用于釬焊銅及銅合金,碳鋼、不銹鋼等。
B-Ag56CuZnSn 料316 BAg-7 55.0

57.0
21.0

23.0
15.0

19.0
4.5

5.5
___ 620 650 替代含鎘銀釬料,用于釬焊銅、鋼、鎳及其合金,一般用于食品行業(yè)或需要顏色匹配場(chǎng)合。
B-Ag30CuZnIn ___ ___ 29.0

31.0
37.0

39.0
25.5

28.5
___ In
4.5

5.5
640 755 In的加入降低了熔點(diǎn),提高了釬料的流動(dòng)性和潤(rùn)濕性,一般用于制冷壓縮機(jī)銅和鋼的釬焊。
B-Ag34CuZnIn ___ ___ 33.0

35.0
34.0

36.0
28.5

31.5
___ In 
0.8

1.2
660 740 熔點(diǎn)低,流動(dòng)性和潤(rùn)濕性較好,常用于代替BAg34CuZnSn在制冷壓縮機(jī)制造中釬焊銅和鋼。
B-Ag40CuZnIn ___ ___ 39.0

41.0
29.0

31.0
23.5

26.5
___ In
4.5

5.5
635 715 熔點(diǎn)較低,流動(dòng)性和潤(rùn)濕性好,常用于代替BAg45CuZn在制冷壓縮機(jī)制造中釬焊銅和鋼。
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