4. 304 vs 316 Stainless Steel: Marking Differences
Shenzhen, China
Published: Jul 3, 2026
4. 304 vs 316 Stainless Steel: Marking Differences
| Factor | SS304 | SS316 |
|---|---|---|
| Annealing darkness | Deeper black | Slightly lighter black |
| Energy required | Standard | +5–10% more |
| Post-passivation mark stability | Good | Excellent |
| Color marking (MOPA) | Brighter colors | Slightly muted colors |
| Corrosion risk from engraving | Moderate | Lower (molybdenum helps) |
| Surface preparation sensitivity | Moderate | Higher — clean thoroughly |
Pro tip: Always test mark parameters on your specific material batch. Even within the same grade, surface finish, heat treatment condition, and slight compositional variations can shift optimal parameters by 10–20%.
