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AWS A5.10: ER 4047
EN ISO 18273: S Al 4047 (AlSi12)
DIN 1732: SG-Al Si 12
Material N°: 3.2585
Special aluminium TIG welding rods for aluminium and its alloys (AlSi; AlCuSiMn, AlSiMg etc.).
Suitable for difficult-to-weld materials, silumin, duralumin and other alloys.
Designed for cast and extruded aluminium alloys with Si content above 7%.
Provides stable arc, excellent flow and high weld quality.
Engine blocks, cylinder heads, tanks, containers, boilers, automotive parts etc.
| Rm (MPa) | Rp 0.2 (MPa) | A5 (%) | Hardness |
| 140 | 80 | 20 | ~50 HB |
| Si | Fe | Cu | Mn | Mg | Zn | Al |
| 12 | 1.2 | 0.007 | 0.01 | 0.02 | 0.03 | balance |
| Process | Rod Ø mm | Current (A) | Gas |
| TIG | 1.6 | 60–120 | Ar 8–12 l/min |
| 2.0 | 80–140 | ||
| 2.4 | 100–180 |
Use pure argon shielding gas.
Clean oxide layer before welding.
Use AC TIG process.
