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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.

Ammonium chloride, NH4CL
Conc. NH4CL % 1 1 5 10 10 10 10 20 20 20 50
Temp. °C 20 100 BP 20-50 90-100 BP 135 20-50 90 BP 115
Grade or type of alloy:
Carbon steel 2 2 2
13 Cr 0p 0p 1p 0p 1p 1p 1p 0p 1p 2 2
Sandvik 1802 0p 0p 0p 0p 0p 1p 1p 0p 1p 1p 2
Sandvik 3R12 0p 0ps 0ps 0p 0ps 1ps 1ps 0p 1ps 1ps 2
Sandvik 3R60 0p 0ps 0ps 0p 0ps 0ps 0ps 0p 0ps 1ps 1ps
18Cr13Ni3Mo 1)
0p 0ps 0ps 0p 0ps 0ps 0ps 0p 0ps 1ps 1ps
17Cr14Ni4Mo 2)
0p 0ps 0ps 0p 0ps 0ps 0ps 0p 0ps 1ps 1ps
Sandvik 2RK65 ('904L') 0p 0ps 0ps 0p 0ps 0ps 0ps 0p 0ps 0ps 1ps
Sanicro 28 0ND 0ND 0ND 0ND 0ND 0ND 0ND 0ND 0 0c
254 SMO 0ND 0ND 0ND 0ND 0ND 0ND 0ND 0ND 0 0
654 SMO 0 0
Sandvik SAF 2304 0ND 0ND 0ND 0ND 0ND 0ND 0ND 0ND 0 1p
Sandvik SAF 2205 0ND 0ND 0ND 0ND 0ND 0ND 0ND 0ND 0 0p
Sandvik SAF 2507 0ND 0ND 0ND 0ND 0ND 0ND 0ND 0ND 0 0pc
Titanium (CP Ti) 0 0 0 0 0 0 0p 0 0 0 0

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