Fusion brazing pastes are custom blended to meet your requirements and contain the following basic components:
- Finely atomized filler metal, alloyed to exacting standards for composition, melting range, and compatibility with base metals to be joined. Most Fusion alloys conform to industry standards while others are customized for improved properties.
- Fluxing agent, designed to remove and prevent reformation of surface oxides during heating. Type and amount are carefully matched to the individual application, ensuring consistent, dependable joints with minimal flux residue.
- Paste-like binder, which holds flux and filler metal in stable suspension while minimizing metal-flux interaction. Controlled formulation ensures consistent application and keeps paste alloy localized in the joint area.
A brazing alloy has suitable melting and flow properties to permit distribution by capillary attraction in properly prepared joints. Brazing alloys produce joints that meet service requirements, such as strength and corrosion resistance. They also meet the specifications of the American Welding Society (AWS), The American Society for Testing Materials (ASTM), and in nearly all cases, ISO standards as well.
Standard brazing alloys include tin, silver, cadmium-free, sil- phos, copper, aluminum, nickel, and jewelers gold. Fusion brazing alloys are atomized into powder form and blended with flux into a paste composition.
Most brazing alloys have less shear strength than the base metals they join.