Aluminium
FERVEO ALU 4043 MIG
solid wireCatalogue only
AWS class
ER4043
EN ISO class
EN ISO 18273 (2016) : Al 4043 - AlSi5
Tensile strength (Rm)
160 MPa
Classification
| AWS class | ER4043 |
|---|---|
| EN ISO class | EN ISO 18273 (2016) : Al 4043 - AlSi5 |
Purpose
- Al-Si (5% Si) solid wire for joining aluminum-silicon alloys and dissimilar aluminum alloys.
- Continuous-wire version of ALU 4043, for semi-automatic MIG/MAG process.
Why it works
Same principle as the ALU 4043 TIG rod — silicon (5%) improves fluidity and reduces hot cracking — but in continuous-wire form, with higher productivity on serial-production parts than the TIG-rod process.
Fields of application
- Joining aluminum-silicon alloys and dissimilar aluminum alloys.
- Higher-volume semi-automatic production than the ALU 4043 TIG-rod process.
Chemical composition
| Element | Typical, % |
|---|---|
| Al | balance |
| Si | 5 |
Mechanical properties
| Tensile strength (Rm) | 160 MPa |
|---|---|
| Yield strength (Rp0.2) | 100 MPa |
| Elongation (A5) | 15 % |
Process
| Polarity | DC+ |
|---|---|
| Shielding gas | I1 |
Sizes and part numbers
| Ø | Request |
|---|---|
| 0.8 mm | |
| 1 mm | |
| 1.2 mm | |
| 1.6 mm |
Supply programme
spools D100 / D200 / K200 / K300
Cross-reference
| Replaces UNION AlSi 5 (Böhler) | Direct replacement |
| Replaces OK Autrod 4043 (ESAB) | Direct replacement |
| Replaces SMT-4043 (Hyundai) | Direct replacement |
| Replaces INEFIL AL5%SI - 4043 (Inefil) | Direct replacement |
| Replaces LNM Al 4043 (Lincoln) | Direct replacement |
| Replaces MAL 4043 (Magmaweld) | Direct replacement |
| Replaces ALUFIL AlSi5 (Oerlikon) | Direct replacement |
| Replaces ALS5 (Selectarc) | Direct replacement |
Equivalence refers to the classification (AWS / EN ISO), not to product identity. In applications with a qualified procedure (WPS), validate the substitution before use.
Base metals
3.21513.23153.32063.32103.3211
Advantages
- Higher productivity than the TIG rod in serial production.
- Good fluidity and hot-cracking resistance, same as ALU 4043 rod.
Limitations
- With Si content, the weld doesn't anodize to the same tone as the base metal.
- Lower ductility (A5 15%) than this datasheet's Al-Mg alloys — not the first choice for demanding structural use.