What is the most accurate description of a brazed joint?

A brazed joint is characterized as a gas-tight fitting due to the process used to create it. Brazing involves melting a filler metal above 450 degrees Celsius (about 840 degrees Fahrenheit) and using it to bond two or more base metals together. The resulting joint typically forms a strong, durable connection that can withstand pressure and is sealed against gas or fluid leakage. This property makes brazing suitable for applications in various industries where secure, leak-proof joints are crucial.

While soldering is similar in that it uses a filler material, it generally operates at lower temperatures and does not achieve the same level of mechanical strength or gas-tight capability. Mechanical joints and welded structures involve different joining techniques that do not encapsulate the characteristics of a brazed joint primarily focused on creating tight seals. Therefore, describing a brazed joint as a gas-tight fitting accurately reflects its intended functionality and application.