Cadmium-Free Silver Brazing Alloys
Multilayer ring φ 0.8*6.9mm; cylindrical φ 2.5 * 500mm can be customized according to the order.
Silver solder cylinder
Multi layer welding ring and silver containing welding piece
Single layer welding ring wire
Silver- based flux cored filler is independently designed by us. The use of silver flux cored filler processes many advantages over those conventional metal join. It is fabricated by adding a certain proportion of scaling powder to a ribbon- like braze material, then winding up. Due to the various demands from different fields, the set of silver-based flux cored filler gives the specific options for different applications; Every design have its specific property and character. Their characters are divided into the following categories: normal liquidity, good liquidity, no splash braze(short thermal cycle), the boron modified scaling powder bearing cored filler with proprolonged protection used for extended heating time. Products in shapes of stripe, wire and pre-formed ring are available.
The residue such as grease,oxide etc on the surface and connection must be removed strictly before the brazing.
(Cadmium-free silver brazing alloys) The content is customized according to the license formula.
| Chinese Standard | Equivalent Grade | Composition(Wt%) | Melting Range(℃) | Characteristics and Application | ||||||
| Product sample brand | AWS A5.8 | Ag | Cu | Zn | Sn | Rest | Solidus | Liquidus | ||
| B-Ag10CuZn | Material301 | ___ | 9.0 ～ 11.0 |
52.0 ～ 54.0 |
36.0 ～ 38.0 |
___ | ___ | 815 | 850 | Low price, high melting point and poor ductility of brazed joints. It is used for brazing copper, copper alloy and steel with low requirements. |
| B-Ag25CuZn | Material302 | ___ | 24.0 ～ 26.0 |
40.0 ～ 42.0 |
33.0 ～ 35.0 |
___ | ___ | 700 | 800 | It is used for workpieces requiring fine surface roughness, high strength and vibration load of brazing joint. The brazing filler metal has good wetting effect and filling ability, brazing copper and copper alloy, steel and stainless steel, etc. |
| B-Ag30CuZn | ___ | BAg-20 | 29.0 ～ 31.0 |
37.0 ～ 39.0 |
30.0 ～ 34.0 |
___ | ___ | 677 | 766 | Good diffusivity, brazing copper and copper alloy, steel and stainless steel, high joint strength. |
| B-Ag45CuZn | Material303 | BAg-5 | 44.0 ～ 46.0 |
29.0 ～ 31.0 |
23.0 ～ 27.0 |
___ | ___ | 665 | 745 | It has low melting point, good wettability and caulking ability, high joint strength and can withstand vibration load. It is widely used in electronics, electric power, food and other industries. |
| B-Ag50CuZn | Material304 | BAg-6 | 49.0 ～ 51.0 |
33.0 ～ 35.0 |
14.0 ～ 18.0 |
___ | ___ | 690 | 775 | It is used for workpieces requiring fine surface roughness, high strength and vibration load, and can be used for parts with uneven brazing gap or large fillet. |
| B-Ag70CuZn | ___ | BAg-10 | 69.0 ～ 71.0 |
19.0 ～ 21.0 |
8.0 ～ 12.0 |
___ | ___ | 690 | 740 | It has low melting point, good wettability and joint filling ability, high joint strength, can bear vibration load, and the surface of brazing joint is smooth. It is especially suitable for brazing workpieces requiring high conductivity. |
| B-Ag25CuZnSn | ___ | BAg-37 | 24.0 ～ 26.0 |
39.0 ～ 41.0 |
31.0 ～ 35.0 |
1.5 ～ 2.5 |
___ | 688 | 780 | Good diffusivity, smooth brazing joint, brazing copper and copper alloy, silver nickel alloy, steel and stainless steel. |
| B-Ag30CuZnSn | Material310 | ___ | 29.0 ～ 31.0 |
35.0 ～ 37.0 |
30.0 ～ 34.0 |
1.5 ～ 2.5 |
___ | 650 | 750 | With low melting point and good diffusivity, it can braze copper and copper alloy, steel and stainless steel, Bondi pipe, etc. |
| B-Ag34CuZnSn | ___ | ___ | 33.0 ～ 35.0 |
35.0 ～ 37.0 |
25.0 ～ 29.0 |
2.5 ～ 3.5 |
___ | 630 | 730 | Low melting point, good wettability and caulking, can braze copper and copper alloy, carbon steel, stainless steel and Bondi pipe, etc. |
| B-Ag40CuZnSnNi | Material322 | ___ | 39.0 ～ 41.0 |
24.0 ～ 26.0 |
29.5 ～ 31.5 |
2.7 ～ 3.3 |
Ni 1.30 ～ 1.65 |
634 | 640 | The melting point is low. The addition of nickel and tin can replace the role of cadmium. It is generally used for brazing copper and copper alloys, carbon steel, stainless steel, etc. |
| B-Ag56CuZnSn | Material316 | BAg-7 | 55.0 ～ 57.0 |
21.0 ～ 23.0 |
15.0 ～ 19.0 |
4.5 ～ 5.5 |
___ | 620 | 650 | Instead of silver solder containing cadmium, it is used for brazing copper, steel, nickel and their alloys. It is generally used in food industry or occasions requiring color matching. |
| B-Ag30CuZnIn | ___ | ___ | 29.0 ～ 31.0 |
37.0 ～ 39.0 |
25.5 ～ 28.5 |
___ | In 4.5 ～ 5.5 |
640 | 755 | The addition of in reduces the melting point and improves the fluidity and wettability of solder. It is generally used for brazing copper and steel in refrigeration compressor. |
| B-Ag34CuZnIn | ___ | ___ | 33.0 ～ 35.0 |
34.0 ～ 36.0 |
28.5 ～ 31.5 |
___ | In 0.8 ～ 1.2 |
660 | 740 | It has low melting point and good fluidity and wettability. It is often used to braze copper and steel in the manufacture of refrigeration compressor instead of bag34cuznsn. |
| B-Ag40CuZnIn | ___ | ___ | 39.0 ～ 41.0 |
29.0 ～ 31.0 |
23.5 ～ 26.5 |
___ | In 4.5 ～ 5.5 |
635 | 715 | It has low melting point and good fluidity and wettability. It is often used to braze copper and steel in the manufacture of refrigeration compressor instead of bag45cuzn. |
(Copper/zinc brazing alloys) The content is customized according to the license formula.
| Chinese Standard | Equivalent Grade | Composition(Wt%) | Melting Range(℃) | Characteristics and Application | |||||||
| Product sample brand | AWS A5.8 | Cu | Zn | Mn | Sn | Fe | Si | Solidus | Liquidus | ||
| B-Cu58ZnMn | Material105 | ___ | 57 ～ 59 |
Yu rem. | 3.7 ～ 4.3 |
___ | 0.15 | ___ | 880 | 909 | Manganese can improve the strength, ductility and wettability of solder to cemented carbide. It is used for brazing cemented carbide tools, molds and mining tools. |
| B-Cu60ZnSn-R | Silk 221 | RBCuZn-A | 59 ～ 61 |
Yu rem. | ___ | 0.8 ～ 1.2 |
___ | 0.15 ～ 0.35 |
890 | 905 | It can replace H62 solder to obtain more dense braze joint, and can also be used as welding wire for gas welding brass. |
| B-Cu48ZnNi-R | ___ | RBCuZn-D | 46 ～ 50 |
Yu rem. | ___ | Ni 9.0 ～ 11.0 |
___ | 0.04 ～ 0.25 |
921 | 935 | It is used for brazing low carbon steel, cast iron and nickel alloy parts with certain heat resistance requirements. It also has good wettability for cemented carbide tools. |
Product Name: cadmium free silver solder.
Shape: multi-layer ring shape, single-layer ring shape, flat strip shape, cylindrical shape, coil wire and size are customized according to the order.
Material: electrolytic copper, silver, zinc, tin and nickel;
Application: copper zinc alloy solder is mainly used for gas flame brazing, high temperature brazing and salt bath immersion brazing of copper and copper alloy, nickel, copper, cast iron, cemented carbide, etc.
Pricing date: global metal network Changjiang spot quotation material price and processing fee on the date of order
Wooden cases with an initial order of more than 100 kg and less than 300 kg shall be settled separately.
Processing fee, (100-300) yuan / kg, FOB is FOB, and the logistics will be sent to the designated places in Shanghai port and Ningbo port.
30% deposit shall be paid in advance by telegraphic transfer, the production cycle shall be (10-20) days, the payment shall be made before delivery, and the settlement shall be completed within the contract period (10-30).
Brand type: domestic independent brand.
Export preference: export goods cannot be determined to enjoy preferential tariffs in the final destination country (region).
Product application: solder is used in large transformers, medical instruments, high-pressure oxygen vessels, space flight chess, central air conditioning, radiators, props, containers, glasses, alloy cutter heads, exploration drill bits, ships, nuclear power engineering, electromechanical, etc.
Technical guidance: when brazing with oxygen acetylene flame, heating with oxidation flame can reduce the evaporation of zinc. The brazing heating time shall be the shortest and overheating shall be avoided to avoid excessive oxidation at the joint to form porous weld. The optimum gap of brazed joint is 0.025-0.1mm. Good brazed joint can be obtained only by cooperating with flux during brazing. Silver based flux cored solder is a kind of flux cored solder independently developed by us. It has many advantages over traditional metal connections.
