Material guide
304 vs 316 stainless steel signs
Short answer: For normal indoor and outdoor business signage, 304 stainless steel is often sufficient. For coastal locations, pool-side areas or chloride-rich exposure, 316 is generally the safer specification because of its improved corrosion resistance.
Decision table
| Condition | Recommended |
|---|---|
| Indoor office | 304 |
| Normal outdoor | 304 |
| Coastal | 316 |
| Pool / chlorine | 316 |
| Marine exposure | 316 |
Why this page exists
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