Galvanized Steel vs Aluzinc Steel: Differences, Service Life & Usage Scenarios
Time : 2026-06-29
Coated steel coil is the core material for outdoor construction, and galvanized & aluzinc are two mainstream anti-rust options. Many overseas buyers confuse these two materials, here is a clear science guide:
Raw Coating Composition
Galvanized steel: 100% zinc coating, thick zinc layer, strong scratch resistance
Aluzinc steel: 55% aluminum + 43.4% zinc + 1.6% silicon, aluminum improves anti-corrosion capacity
Service Life DifferenceAluzinc has 2–4 times longer anti-rust lifespan than ordinary galvanized steel, especially in coastal high-salt air environment.
Cost & ApplicationGalvanized steel: lower unit price, suitable for rural housing, temporary workshops, common guardrailsAluzinc steel: slightly higher cost, perfect for coastal buildings, solar support, high-end facto
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