These corrosion data are mainly based on results of general corrosion laboratory tests, carried out with pure chemicals and water solutions nearly saturated with air (the corrosion rate can be quite different if the solution is free from oxygen).

All concentrations are given in weight-% and the solvent is water if nothing else is shown. The corrosion data apply to annealed materials with normal microstructure and clean surfaces, throughout.

Calcium chloride, CaCl2
Conc. CaCl2%55510
Temp. °C205010020
Grade or type of alloy:
Carbon steel2222
13 Cr0p1p1p1p
Alleima® 18020p0p0p0p
Alleima® 3R120p0p0ps0p
Alleima® 3R600p0p0ps0p
18Cr13Ni3Mo 1)
17Cr14Ni4Mo 2)
Alleima® 2RK65 ('904L')0p0p0ps0p
Sanicro® 280
254 SMO0
654 SMO0
SAF™ 23040
SAF™ 22050
SAF™ 25070
Titanium (CP Ti)0000

1) ASTM 317L, e.g. Alleima® 3R64
2) EN 1.4439, e.g. Alleima® 3R68

Conc. CaCl2%10101025406273
Temp. oC50100-BP135100100155176
Grade or type of alloy:
Carbon steel2222
13 Cr1p1p1p2
Alleima® 18020p0p0p0p
Alleima® 3R120p0ps0ps0ps
Alleima® 3R600p0ps0ps0ps
18Cr13Ni3Mo 1)
17Cr14Ni4Mo 2)
Alleima® 2RK65 ('904L')0p0ps0ps0ps
Sanicro® 280c0ND0ps
254 SMO0p0pc0s
654 SMO00pc0ps
SAF™ 23040p0p0p
SAF™ 22050p0p0ps
SAF™ 250700p0ps
Titanium (CP Ti)000p001p2

1) ASTM 317L, e.g. Alleima® 3R64
2) EN 1.4439, e.g. Alleima® 3R68

Symbol clarification

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.