Corrosion Rates: duplex_2205
Quantitative corrosion rate data for metals in various environments — corrosion rate in mm/yr and mpy, pitting potential, crevice and stress corrosion risk ratings, and PREN values
| metal id | environment id | concentration pct (%) | corrosion rate mm yr (mm/yr) | corrosion rate mpy (mpy) | crevice corrosion risk | environment description | metal name | notes | pren | resistance rating | stress corrosion risk | temperature C (C) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| duplex_2205 | h2so4_10pct_25c | 10 | 0.5 | 19.7 | moderate | Sulfuric acid 10% at 25°C | Duplex 2205 (UNS S32205) | Better than 316 SS; still active region in H2SO4; PREN doesn't directly predict acid resistance | 35 | fair | low | 25 |
| duplex_2205 | hcl_5pct_25c | 5 | 2 | 78.7 | high | Hydrochloric acid 5% at 25°C | Duplex 2205 (UNS S32205) | Poor HCl resistance; upgrade to Hastelloy C-276 or Inconel 625 required | 35 | poor | low | 25 |
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