Which one is more rust-resistant, 304 stainless steel or 430?
Apr 29, 2025
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Which Stainless Steel Is More Rust-Resistant: 304 vs. 430?
304 stainless steel430 stainless steel are both popular choices-but which one offers better protection against rust?
Overview of 304 Stainless Steel
: S30400
: 18–20% Chromium, 8–10.5% Nickel
:
Non-magnetic in annealed condition
Overview of 430 Stainless Steel
: S43000
: 16–18% Chromium, Very low or no Nickel
:
Lower cost than 304
304 vs. 430 stainless steel Corrosion Resistance Comparison
| 304 Stainless Steel | 430 Stainless Steel | |
|---|---|---|
| 18–20% | 16–18% | |
| 8–10.5% | {{0}}–0.75% (typically none) | |
| Long-term outdoor durability |
304 is recommended for:
430 is suited for:
Automotive trims (non-structural)
Budget-conscious applications with low moisture exposure
GNEE 430 stainless steel plate transportation anti-corrosion packaging
long-term rust resistancehumid, outdoor, or chemical-prone environments, 304 stainless steel is the superior choice
430 stainless steelindoor or low-moisture conditions
