- Soldering: Uses low heat and filler metal without melting the base metal;
- Temperature – Below 450°C
- Base Metal Fusion – Base metals do not melt
- Filler Material – Required (low-melting alloys like tin-lead or silver)
- Strength – Weakest joint, used for electrical and delicate work
- Applications – Electronics, circuit boards, jewelry, plumbing
- Heat Source – Soldering iron or torch
