Brass brazing alloy is a welding material with copper (Cu) as the basic component and an appropriate amount of zinc (Zn) added to form a brass body. In some specific brass brazing alloy formulas, it may also contain a small amount of other auxiliary elements, such as tin (Sn), lead (Pb), aluminum (Al), etc. The addition of these elements can further optimize the various properties of the alloy to better meet the needs of different brazing scenarios.
| Standard | Item | Alloy | Chemical Composition |
|---|---|---|---|
| ISO24373 | Cu4641 | CuZn40SnSi | Cu:58.0~62.0 Al:0.01 Fe:0.2 Mn:0.3 Si:0.1~0.5 Sn:1.0 Zn:bal. |
| GB/T9460 | SCu6810A | CuZn40SnSi | Cu:58.0~62.0 Al:max 0.01 Fe:max 0.2 Mn:max 0.3 Si:0.1~0.5 Sn:max 1.0 Zn:bal. |
| BS EN14640 | SCu6810 | CuZn40SnSi | Cu:58.0~62.0 Al:0.01 Fe:0.2 Mn:0.3 Si:0.1~0.5 Sn:1.0 Zn:bal. |
| DIN 1733 | 2.0366 | SG-CuZn40SnSi | Cu:58.0~62.0 Al:max 0.01 Fe:max 0.2 Mn:max 0.3 Si:0.1~0.5 Sn:max 1.0 Zn:bal. |
| Brass Brazing Rods Standard Sizes |
|---|
| 1.5mm (0.059”) |
| 2.0mm (0.079”) |
| 2.5mm (0.098”) |
| 3.0mm (0.118”) |
| 4.0mm (0.157”) |
| 5.0mm (0.197”) |
| 6.0mm (0.236”) |
| 8.0mm (0.315”) |










A: The alloy is mainly composed of Copper (Cu) and Zinc (Zn), forming a brass base. It may also include Tin (Sn), Silicon (Si), and Aluminum (Al) to improve fluidity and strength.
A: These rods are excellent for joining various metals, including copper, steel, and cast iron, and are particularly effective for dissimilar metal connections.
A: No, the alloy provides a smooth finish after welding, which often eliminates the need for complicated post-processing or excessive cleaning.
A: It is widely used in mechanical manufacturing for structural parts, electronic equipment for precision components, and architectural fields for decorative metal installations.
A: Yes, we offer standard diameters ranging from 1.5mm to 8.0mm. Custom sizes can also be manufactured to meet unique customer requirements.
A: Brass brazing alloys possess excellent corrosion resistance, ensuring that joints maintain their integrity and strength even under challenging environmental conditions.