Here’s a clear comparison of AI (Aluminium) vs GI (Galvanized Iron) for solar structure applications, helping you determine which material is superior based on various factors.

1. Durability

– Aluminium (AI): Naturally corrosion-resistant; doesn’t rust. Ideal for long-term outdoor use.

– Galvanized Iron (GI): Protected by a zinc coating, but once that coating is damaged, rust can form.

✅ Winner: Aluminium (longer life without extra treatment)

2. Weight

– Aluminium (AI): Lightweight, easy to transport and install, especially useful for rooftop systems.

– Galvanized Iron (GI): Heavier, making handling and structural support more demanding.

✅ Winner: Aluminium (more efficient for installation)

3. Corrosion Resistance

– AI: Excellent natural resistance to corrosion even in coastal or humid environments.

– GI: Zinc layer offers initial protection, but can degrade over time.

✅ Winner: Aluminium (superior resistance without maintenance)

4. Cost

– AI: Higher upfront material cost.

– GI: Generally cheaper to source.

✅ Winner: GI (if only considering short-term cost)

5. Sustainability

– AI: 100% recyclable without loss of quality.

– GI: Recyclable, but the galvanization process involves chemicals.

✅ Winner: Aluminium (eco-friendly and sustainable)

6. Strength

– AI: Lower tensile strength than GI, but sufficient for solar loads.

– GI: Higher strength, better suited for heavy-duty or large-scale ground mount systems.

✅ Winner: Depends on application

✅ Conclusion: Which is Superior?

For most rooftop and long-term solar structures, Aluminium is superior due to:

– Better corrosion resistance

– Lightweight and easy handling

– Sustainability and aesthetics

However, GI may be preferred for budget-sensitive or heavy-load ground-mounted systems.

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