Buyers ask us this daily. The honest answer: all three can be the right choice — it depends on your climate, budget and whether you prioritize security or low maintenance. Here is the comparison we give our own clients.
| Wrought Iron | Cast Aluminum | Steel (Tubular) | |
|---|---|---|---|
| Strength / security | ★★★★★ Excellent | ★★★ Good | ★★★★ Very good |
| Rust resistance | Good with proper coating | ★★★★★ Naturally rust-proof | Good when galvanized |
| Weight | Heavy (needs strong posts/hinges) | Light | Medium-heavy |
| Design detail | ★★★★★ Hand-forged scrollwork possible | ★★★ Cast patterns | ★★★ Welded/weldless |
| Lifespan (coastal climate) | 20–30 yrs with maintenance | 30+ yrs, near zero maintenance | 15–25 yrs |
| Cost (driveway gate, factory-direct) | $$$ | $$$$ | $$ |
| Repairability | Weldable anywhere | Hard to repair, usually replaced | Weldable |
Modern finishing beats material choice: hot-dip galvanizing or zinc-rich primer followed by outdoor powder coating protects iron and steel for decades. Nearly every "rusty iron gate" failure we inspect comes from a single-coat paint job, not from the metal itself. Whichever material you pick, demand a written finish specification.

Shanghai Hench Industry Co.;Ltd
Mob: +86 18221436889
WhatsApp: +86 18221436889
Email: [email protected]
Address: No. 7102 Nanting Hwy;Tingling Town;Jinshan District 201515; Shanghai China