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| Conc. CH3COONH4 % | 3 |
|---|---|
| Conc. K2Cr2O7 % | 2.5 |
| Temp. °C | BP |
| Grade or type of alloy: | |
| Carbon steel | 2 |
| 13 Cr | |
| Alleima® 1802 | 0 |
| Alleima® 3R12 | 0 |
| Alleima® 3R60 | 0 |
18Cr13Ni3Mo 1) | 0 |
17Cr14Ni4Mo 2) | 0 |
| Alleima® 2RK65 ('904L') | 0 |
| Sanicro® 28 | 0 |
| 254 SMO | 0 |
| 654 SMO | 0 |
| SAF™ 2304 | 0 |
| SAF™ 2205 | 0 |
| SAF™ 2507 | 0 |
| Titanium (CP Ti) | 0 |
1) ASTM 317L, e.g. Alleima® 3R64
2) EN 1.4439, e.g. Alleima® 3R68
These corrosion tables use a number of symbols, having the following meanings:
| Symbol | Description |
|---|---|
| 0 | Corrosion rate less than 0.1 mm/year. The material is corrosion proof. |
| 1 | Corrosion rate 0.1—1.0 mm/year. The material is not corrosion proof, but useful in certain cases. |
| 2 | Corrosion rate over 1.0 mm/year. Serious corrosion. The material is not usable. |
| p, P | Risk (severe risk) of pitting and crevice corrosion. |
| c, C | Risk (Severe risk) of crevice corrosion. Used when there is a risk of localised corrosion only if crevices are present. Under more severe conditions, when there is also a risk of pitting corrosion, the symbols p or P are used instead. |
| s, S | Risk (Severe risk) of stress corrosion cracking. |
| ig | Risk of intergranular corrosion. |
| BP | Boiling solution. |
| ND | No data. (Used only where there are no actual data to estimate the risk of localised corrosion instead of p or s). |
Disclaimer: Laboratory tests are not strictly comparable with actual service conditions. Accordingly, Alleima makes no warranties, express or implied, and accept no liability, compensatory or consequential, for the performance of different materials in individual applications that may be based on the information provided in this publication.