Silver Brazing Alloy
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silver brazing alloy
| Classification | Chemical composition (%) | Critical points (°C) | Brazingtemperature (°C) | Application | Character | ||||
| Ag | Cu | Zn | Sn | Solidus | Liquidus | ||||
| 17/19 | 45/47 | 32/36 | 1.5/2.5 | 780 | 810 | 800/900 | Suitable for copper-copper alloy, steel-stainless steel. | High melt point, high weld temperature, weld joint is very hard, low price. | |
| BAg25CuZn | 24/26 | 40/42 | 33/35 | 700 | 800 | 800/900 | Good draft, weld joint is hard, but the weld temperature is high. | ||
| 24/26 | 39/41 | 32/34 | 1.5/2.5 | 680 | 760 | 770/843 | Good draft, weld joint is hard, but the weld temperature is middle. | ||
| 29/31 | 35/37 | 31/33 | 1.5/2.5 | 650 | 750 | 740/810 | Is the No.1 for welding bangdi tube on the icebox, can instead of BAg25CuZn | Low melt point, good welding draft, good weld joint. | |
| Bag34CuZnSn | 33/35 | 35/37 | 25/39 | 2.5/3.5 | 630 | 730 | 730/820 | ||
| 39/41 | 29/31 | 27/29 | 1.5/2.5 | 650 | 700 | 710/801 | Same as BAg25CuZn | Low melt point, low weld temperature, good draft. | |
| Bag45CuZn | 44/46 | 29/31 | 23/27 | 665 | 745 | 745/816 | Very popular in copper alloy and stainless steel, more suitable for milk industry. | Weld temperature is middle, good weld draft, good weld joint. | |
| 44/46 | 23/27 | 23/27 | 2.5/3.5 | 640 | 680 | 685/787 | |||
| BAg50CuZn | 49/51 | 33/35 | 15/17 | 688 | 774 | 774/843 | Same as Bag45CuZn, Commonly, used for welding galvanized steel. | Little worse than Bag45CuZn on the liquidity, suitable for welding the big allowance joint. | |
| Bag56CuZnSn | 55/57 | 21/23 | 15/19 | 4.5/5.5 | 620 | 650 | 650/760 | Same as Bag45CuZn, commonly, used for stainless steel of food industry. | Lower temperature than Bag45CuZn, Better welding draft, The welding joint color is same as the stainless steel’s co |
