Galfan
Zn-5Al-MM / Zinc-5 % Aluminum-Mischmetal
Galfan is a type of steel that is coated with a zinc-aluminum layer instead of the traditional galvanized steel zinc layer because the zinc-aluminum layer has superior corrosion resistance. This superior corrosion resistance allows thinner layers of protective coating to be applied.
Galfan, Zn-5Al-MM alloy ingot for hot dip coatings may contain up to 0.002%, 0.1% and 0.05% of antimony, copper and magnesium, respectively. No harmful effects were observed due to the presence of these elements up to these concentrations and therefore analysis for these elements is not required.
- Better corrosion resistance
- Many cars contain galfan coated components
- Electrical boxes are usually made of galfan-coated material.
Galfan Chemical Analysis
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Galfan /Zn-5Al-MM Chemical Analysis
| Analysis ( %) | Galfan /Zn-5Al-MM |
|---|---|
| Al | 4.2 – 6.2 |
| Cerium + Lanthanum (MM) | 0.03 – 0.10 |
| Cd | ≤0.005 |
| Fe | ≤0.075 |
| Sn | ≤0.002 |
| Si | ≤0.0015 |
| Pb | ≤0.005 |
| In | ≤0.005 |
| Zn | 93.56 – 95.56 |
| Other | Balance |