Description
ER 4043 is Al-Si alloy with good fluidity and is less sensitive to weld cracking and produce good weld. It has moderate electrical conductivity and thermal conductivity it has low welding smut and discoloration. This is non-heat treatable. COMPOSITION OF ALL WELD METAL (%)
| Element | Si | Fe | Mn | Cu | Mg | Others | Al |
| Percent | 5.0 | 0.08 | 0.15 | 0.30 | 1.10 | 0.15 | Balance |
