ER4043 is one of the oldest and most widely used welding and brazing alloys. 4043 can be classified as a general purpose type filler alloy. The silicon additions result in improved fluidity (wetting action) to make the alloy a preferred choice by welders. The alloy is less sensitive to weld cracking and produces brighter, almost smut-free welds.

Actual Spool weight is 6kg on a standard 15kg spool. Reduced weight due to aluminium being lighter.

Available in the following 15kg spools: 0.8mm, 0.9mm, 1.0mm, 1.2mm, 1.6mm