What is a silver alloy's "liquidus" temperature?

A silver alloy's "liquidus" temperature is defined as the temperature at which the filler material transitions from a solid state to a fully liquid state. This is a critical concept in brazing, as it indicates the minimum temperature required to effectively melt the filler metal for bonding with the base materials. Understanding the liquidus temperature is essential because it ensures that the alloy reaches the appropriate phase to flow, filling gaps and creating a strong joint when braze melting occurs.

This process is fundamental in achieving effective soldering or brazing results, as falling below this temperature would mean the metal remains solid and unable to bond effectively with the base metals. Therefore, knowing the liquidus temperature allows for precise temperature control during the brazing process, ensuring that the filler metal flows into the joint properly.