Welding Electrode ESAB ER 146 3.25 mm, 6.5 kg spool

ESAB ER 146 3.25 mm welding electrode supplied on a 6.5 kg spool is a continuous wire filler metal intended for arc welding applications requiring the ER 146 chemistry and mechanical properties. The product has a 3.25 mm wire diameter and is wound on a 6.5 kg spool to support extended welding runs with fewer stoppages. It is suitable for use where an ER 146 specification is called for and can be integrated into standard welding setups that accept spool-fed electrode wire.

Advantages

The 3.25 mm diameter provides a balance between penetration and deposition rate for medium to heavy sections, while the 6.5 kg spool format reduces downtime by allowing longer continuous feeding. ESAB manufacturing ensures consistent wire chemistry and dimensional tolerances for reliable feedability and weld quality. The continuous wire form simplifies handling compared with short stick electrodes and is compatible with common arc welding equipment designed for ER 146 wire.

Suitable for

• Industrial arc welding of components requiring ER 146 filler metal
• Fabrication and repair of medium to heavy steel sections
• Workshop and production environments using spool-fed welding equipment
• Situations demanding consistent alloy composition and mechanical performance

Key specifications

• Wire diameter: 3.25 mm
• Spool mass: 6.5 kg
• Filler metal classification: ER 146
• Form: continuous wire on spool suitable for spool-fed feeders
• Intended process: arc welding with flux/core chemistry matching ER 146 requirements

How to use

Install the 6.5 kg spool on a compatible spool-holder or feeder according to the welding equipment manufacturer’s instructions. Ensure correct wire feed speed, contact tip size, and polarity for a 3.25 mm ER 146 wire and set welding parameters based on material thickness and joint design. Maintain clean base metal surfaces and proper shielding gas or flux selection consistent with ER 146 use. Perform test welds and adjust parameters to achieve the required penetration, bead profile, and mechanical properties.

Usage recommendations

Store the spool in a dry, clean environment to prevent contamination and moisture pickup. Use recommended contact tips and drive rolls sized for 3.25 mm wire to ensure smooth feeding. Follow health and safety guidelines for welding, including ventilation and personal protective equipment, and consult material specifications to confirm ER 146 is appropriate for the parent material and required weld properties.