Material for Cooling Water Pump (containing Fluoride ion)
Material for Cooling Water Pump (containing Fluoride ion)
(OP)
Dear everyone,
I have a question about material selection for cooling water pump.
our cooling water (specific) condition is as follows:
- Temp.: 36 - 46 degree C
- Chloride (Cl-): 2200 ppm
- Fluoride (F-): 2000 ppm
Considering the chloride content, Duplex Stainless Steel is acceptible.
However, I have no idea for effect of fluoride ion in cooling water.
please help for material selection.
I have a question about material selection for cooling water pump.
our cooling water (specific) condition is as follows:
- Temp.: 36 - 46 degree C
- Chloride (Cl-): 2200 ppm
- Fluoride (F-): 2000 ppm
Considering the chloride content, Duplex Stainless Steel is acceptible.
However, I have no idea for effect of fluoride ion in cooling water.
please help for material selection.





RE: Material for Cooling Water Pump (containing Fluoride ion)
lm
RE: Material for Cooling Water Pump (containing Fluoride ion)
I wouldn't expect 2205 to be good enough for this.
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Plymouth Tube
RE: Material for Cooling Water Pump (containing Fluoride ion)
How big a pump are we talking???
Regards
StoneCold
RE: Material for Cooling Water Pump (containing Fluoride ion)
RE: Material for Cooling Water Pump (containing Fluoride ion)
The shaft alloy selection is one of them, it needs to be at least as corrosion resistant, maybe a Ni alloy such as 625.
One issue with a Cu alloy is the temp and Fl, this is not a good situation for most Cu alloys.
SS would have better erosion resistance.
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Plymouth Tube
RE: Material for Cooling Water Pump (containing Fluoride ion)
RE: Material for Cooling Water Pump (containing Fluoride ion)
The synergetic effect of chloride and fluoride on the critical pitting temperature of 316 stainless steel
http://www.jcscp.org/EN/abstract/abstract24.shtml
S
Corrosion & Rust Prevention Control