Solder wire S321The S321 soldering wire is a highly active soldering wire and a proven product for work in the metal, sheet metal and electrical industries. The S321 soldering wire contains urea as flux core and is also halogen-activated. Due to the high activity, the flux has good wetting characteristics on almost all metal surfaces (except aluminium).
- Very high activation
- Suitable for most metal surfaces
- Residues must be removed
- Residues are easily soluble in water
- Not for stainless steel and aluminium