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 |
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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 |
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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。 |