Soldering wire with flux core 1 mm 100 g, Polax

Polax soldering wire with flux core, 1 mm diameter on a 100 g spool, is intended for general-purpose manual soldering of electronics, electrical connections and small metal parts. The integrated flux core improves wetting and assists oxide removal, enabling consistent solder flow and faster joint formation without separate flux application. It is compatible with common base metals such as copper and tin-plated surfaces and is suitable for use with standard temperature-controlled soldering irons.

Advantages

The flux-core design reduces preparation time by combining solder and flux in a single product, promoting cleaner and more reliable solder joints. A 1 mm diameter provides a balance between fine control for component leads and sufficient volume for small wires and terminals. The 100 g spool format is compact for workshop use and portable for field repairs, and the wire alloy and flux formulation are chosen to produce good wetting and consistent mechanical and electrical connections when used at appropriate temperatures.

Suitable for

• General electronics soldering of through-hole components and wiring.
• Electrical terminal and connector repairs.
• Small metalwork and hobby projects requiring reliable joints.
• Field service and on-site maintenance with a portable soldering iron.

Key specifications

• Wire diameter: 1 mm.
• Spool weight: 100 g.
• Flux core: integrated (activated flux for improved wetting).
• Intended use: manual soldering with electric soldering irons.
• Compatible substrates: copper, tin-plated surfaces and common alloys.

How to use

Prepare the joint area by ensuring surfaces are clean and free of heavy oxidation, oils or contaminants. Heat the joint with a temperature-controlled soldering iron to the appropriate temperature for the wire alloy, then apply the soldering wire to the heated area so the flux melts and the solder flows into the joint. Remove heat once the solder has flowed and formed a smooth fillet; allow the joint to cool undisturbed. Use proper ventilation and personal protective equipment when soldering.

Usage recommendations

For reliable results, use a soldering iron temperature suitable for the wire alloy and the workpiece—too low temperature can cause poor wetting, while excessive heat may damage components. Clean flux residues if required by the application or use a mild solvent compatible with the flux type. Store the spool in a dry place away from corrosive atmospheres to maintain solderability.