Problem / Question
Brazing, soldering and welding are often used loosely. The distinction matters because it changes heat input, joint design and material choice.
Key factors
- Soldering: filler melts below ~450 °C; base metal never melts. Common in electronics.
- Brazing: filler melts above ~450 °C but below the base metal; strong joints, less distortion than welding.
- Welding: the base metal itself melts and fuses; highest heat and distortion, strongest monolithic joints.
- Dissimilar metals often favour brazing or soldering over welding.
Material considerations
Copper and brass suit copper-phosphorus or silver brazing. Stainless and steel often use silver brazing with flux. Electronics use SAC or SnCu solders.
What information a supplier needs
Base materials, joint geometry, service temperature and whether the assembly can tolerate heat. From that, the process and filler follow.
Related capability
Related solution