QuAlSi7 TIG Welding Wire Aluminium AlSi7Mg / ER4010 (3.2371)
QuAlSi7 TIG Welding Wire Aluminium AlSi7Mg / ER4010 (3.2371)
QuAlSi7 is a magnesium-alloyed aluminium filler metal to EN ISO 18273 S Al 4010/4018 (AlSi7Mg) · AWS SFA-5.10 ER4010/4018 · material no. ~3.2371. With roughly 7 % silicon and 0.5–0.8 % magnesium it is matched to AlSi7Mg casting alloys — the material most aluminium chassis and engine components are made from.
The magnesium content is the point: it makes the weld metal age-hardenable. If the component is heat-treated again after the repair, the seam gains strength along with it — unlike a plain AlSi filler without magnesium.
Recommended base materials
- Aluminium-silicon alloys with approx. 7 % Si
- AlSi7Mg casting alloys (e.g. A356 / G-AlSi7Mg)
- Joint and build-up welding
Typical applications
- Repairs to AlSi7Mg castings — chassis, engine, gearbox
- Filling cavities and defects in aluminium castings
- Contour corrections on moulds and prototypes
- Repairs that are subsequently age-hardened
Properties and advantages
- Identical-type to AlSi7Mg — same alloy, same behaviour when anodising and heat-treating
- Age-hardenable thanks to the magnesium content
- Weld metal: Re 40 MPa · Rm 120 MPa · A 8 %
- Shielding gas argon; post-processing material-typical
Rod form advantage: Ideal for manual build-up welding with constant wire feed — also in hard-to-reach areas of castings.
Rod form: Rod lengths 1000 mm, 1kd cardborad tube, 5 kg carton, Ø 1,2 mm – 2,4 mm.
Material analysis (wt.-%)
Si 6.5–7.5 | Fe 0.20 | Ti 0.20 | Mg 0.50–0.80 | Al balance
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| Diameter: | 1,2 mm, 1,6 mm, 2,0 mm, 2,4 mm |
|---|---|
| Recommendations for basis material: | aluminum–silicon–alloys up to 7% Si |
| Refinish: | material typical treatment |
| Rod length: | 1000 mm |
| Wire: | WIG wire |
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