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4043 is a great choice for the welding of heat-treatable base alloys and more specifically the 6XXX series alloys. It has a lower melting point and more fluidity than the 5XXX series filler alloys and is preferred by welders because of its favorable operating characteristics. ER4043 type wires may reduce crack sensitivity with the 6XXX series base alloys. 4043 is suitable for sustained elevated temperature service, i.e. above 65°C.
| Diameters | 4.5 KG CARTON BOX | 4.5 KG CARTON BOX | 10 lb Carton |
| 1.6 mm | ED031111C | ||
| 1/8 in (3.2 mm) | ED031113C | ||
| 3/32 in (2.4 mm) | ED031112C | ||
| 5/32 in (4.0 mm) | ED035407 |
