Technical center

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.

Sulphuric acid + chlorides, (200 ppm CI-)
Conc.H2SO4% 1 1 1 1 5 5 5 10 10 10 10 10 20 20 20 20
Conc.Cl-ppm 200 200 200 200 200 200 200 200 200 200 200 200 200 200 200 200
Temp.°C 70 80 90 100 70 80 90 50 60 70 80 90 40 50 60 70
Grade or type of alloy:
Carbon steel
13 Cr
Sandvik 1802
Sandvik 3R12
Sandvik 3R60 0 1
18Cr13Ni3Mo 1)
17Cr14Ni4Mo 2)
Sandvik 2RK65 ('904L') 0 1 1 0 2 0 0 2 0 1
Sanicro 28 0 0 0 0 0 1 0 0 1 1
254 SMO 0 0 0 2 0 0 2 0 0 2 2 0 1
654 SMO 0
Sandvik SAF 2304 2 2
Sandvik SAF 2205 0 0 2 0 2 2 2
Sandvik SAF 2507 0 0 0 0 0 0 0 2 0 0 0 0
Sandvik SAF 2707 HD 0
Sandvik SAF 2906 0
Sandvik SAF 3207 HD 0
Ti

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

Sulphuric acid + chlorides
Conc.H2SO4% 20 20 30 30 30 30 40 40 40 50 50
Conc.Cl-ppm 200 200 200 200 200 200 200 200 200 200 200
Temp.°C 80 90 30 40 50 60 15 25 40 50 60
Grade or type of alloy:
Carbon steel
13 Cr
Sandvik 1802
Sandvik 3R12
Sandvik 3R60 2
18Cr13Ni3Mo 1)
17Cr14Ni4Mo 2)
Sandvik 2RK65 ('904L') 2 0 1 2 1 1
Sanicro 28 1 0 1 1 0 0 0 0 0
254 SMO 1 2 0 1 1 0 0 0
654 SMO
Sandvik SAF 2304
Sandvik SAF 2205 2 2 2 2 0
Sandvik SAF 2507 2 2 2
Sandvik SAF 2707 HD 2
Sandvik SAF 2906 2
Sandvik SAF 3207 HD 1
Titanium (CP Ti)

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

Sulphuric acid + chlorides
Conc.H2SO4% 1 1 1 1 3 3 5 5 5 5 5 5 10 10 10
Conc.Cl-ppm 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000
Temp.°C 70 80 90 100=BP 40 50 50 60 70 80 90 100 20 40 50
Grade or type of alloy:
Carbon steel
13 Cr
Sandvik 1802
Sandvik 3R12
Sandvik 3R60 0 1 0
18Cr13Ni3Mo 1)
17Cr14Ni4Mo 2)
Sandvik 2RK65 ('904L') 0 1 0 1 0 0 1
Sanicro 28 0 0 0 0 0 0 0 0 0
254 SMO 0 0 0 0 0 0 0 0 1
654 SMO 0 0 0 1 0 0 0 0 0 0 0 0
Sandvik SAF 2304 0 0 1 2
Sandvik SAF 2205 0 1
Sandvik SAF 2507 1 0 0 0 0 0 0 0 2 0 0 0
Sandvik SAF 2707 HD 0
Sandvik SAF 2906 0
Sandvik SAF 3207 HD 0
Titanium (CP Ti)

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

Sulphuric acid + chlorides
Conc.H2SO4% 10 10 10 15 15 20 20 20 20 30 30 30 30 40 40
Conc.Cl-ppm 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000
Temp.°C 60 70 80 50 60 20 30 40 50 15 30 40 50 15 30
Grade or type of alloy:
Carbon steel
13 Cr
Sandvik 1802
Sandvik 3R12
Sandvik 3R60
18Cr13Ni3Mo 1)
17Cr14Ni4Mo 2)
Sandvik 2RK65 ('904L') 0 1 1 1
Sanicro 28 0 0 1 0
254 SMO 0 0 1 1
654 SMO 0 0 0 0 0 0 0 0 0 0 0 0 2 0 1
Sandvik SAF 2304 2 2
Sandvik SAF 2205
Sandvik SAF 2507 0 1 2 1 2 1 2
Sandvik SAF 2707 HD 0 0
Sandvik SAF 2906 0 0
Sandvik SAF 3207 HD 0 0 0
Titanium (CP Ti)

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

Sulphuric acid + chlorides
Conc.H2SO4% 50 50 60 60 70 70 80 80 90 90 98 98
Conc.Cl-ppm 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000
Temp.°C 15 30 15 30 15 30 15 30 15 30 15 30
Grade or type of alloy:
Carbon steel
13 Cr
Sandvik 1802
Sandvik 3R12
Sandvik 3R60
18Cr13Ni3Mo 1)
17Cr14Ni4Mo 2)
Sandvik 2RK65 ('904L') 1 0 0 0 0 1 1 0 0
Sanicro 28
254 SMO 1 1 0 1 0 1 1 1
654 SMO 1 1 1 1 0 1 0 0 2
Sandvik SAF 2304
Sandvik SAF 2205
Sandvik SAF 2507
Titanium (CP Ti)

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