Desalination Plant Alloy Scrap
Source industry
Desalination plants use 254 SMO, super duplex and titanium for seawater intake, high-pressure reverse-osmosis piping and evaporator tubing. Rebuilds and plant upgrades release this material in large, clean lots.
Background
Why Desalination Uses Nickel Alloys
Desalination plants pump hot, concentrated seawater at high pressure, one of the most aggressive environments for pitting and crevice corrosion. That is why they use 6% molybdenum stainless, super duplex and titanium.
Scrap is released at plant upgrades and rebuilds, when high-pressure piping, pump casings and evaporator tube bundles are replaced.
The chain
From Component to Scrap
Where the alloy served, which grades are used there, and the scrap that comes back.
Super duplex 2507 and S32760, 254 SMO
Pipe and fittings
254 SMO, super duplex, Ni-Resist pumps
Pipe, pump castings
Titanium Grade 2, copper-nickel
Tube bundles
Grades
Grades from This Industry
Open a grade for its composition, identification and standards.
| Grade | Typical use in this industry |
|---|---|
| 254 SMO | Seawater cooling and firewater systems |
| Super duplex 2507 | Seawater injection and firewater piping |
| Super duplex S32760 | Seawater and firewater systems |
| Titanium Grade 2 | Condenser and heat exchanger tubes |
| Ni-Resist Type 1 | Pump casings and impellers |
Standards
Standards Behind This Scrap
Desalination plant uses titanium tube to ASTM B338, super duplex and 254 SMO pipe and plate to ASTM A790, A312 and A240, and duplex forgings to A182 (F51, F53, F55).
Before you sell
Things to Know
Desalination is concentrated in the Gulf, which makes the Middle East a major source of super duplex and titanium tube scrap.
Questions
FAQ
Which alloys come out of desalination plants?
Mainly super duplex, 254 SMO and titanium, plus copper-nickel tube from older thermal plants.
Are desalination scrap lots usually clean?
Generally yes. The alloys are used in water service, so lots are usually free of process residues, although scale and marine deposits should be removed.
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