Materials of Construction for NaOH / Mg(OH)2

[treemkr]

Hello, I need to determine proper materials of construction for a vessel storing aqueous solutions of NaOH or Mg(OH)2 (or other bases). I am familiar with materials for acids but not bases. Any help would be appreciated

 

[CoryPad]

Depends on temperature, concentration, and allowable corrosion rate. Carbon steels are most common, nickel alloys (200 or 201, Monel 400, and Inconel 600) are used for higher concentrations and temperatures, and thermoplastics can be used when temperature and pressure are low.

Regards,

Cory

Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.

 

[gopalsankar]

Please refer UOP Caustic soda chart for selection of material.Carbon steel can be used up to 65 Deg.C with stress relieving of weld.