18
Plate heat exchanger corrosion resistance
The corrosion behaviour of stainless steel and copper solder must be considered.
Water containing
material
Chloride
See diagram
Iron
< 0.2 mg/l
Manganese
< 0.1 mg/l
Ammonia
< 2 mg/l
pH value
7 - 9
Electrical conductivity
10
– 500 µS/cm
Free carbonic acid
< 20 mg/l
Nitrate
< 100 mg/l
Sulphate
< 100 mg/l
Saturation index SI
-0.2 < 0 < +0.2
Total hardness
6
– 15 °dH
Filterable substances
< 30 mg/l
Free chlorine
< 0.5 mg/l
Hydrogen sulphide
< 0.05 mg/l
Hydrogen carbonate
< 300 mg/l
Hydrogen car-
bonate/sulphate
> 1 mg/l
Sulphide
< 1mg/l
Nitrite
< 0.1 mg/l
We reserve the right to make technical changes.
© 2014
Temperature [°C]
C
hl
ori
de [
m
g/
k
g]
