Chapter 8 Technical parameters
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8.2. Electrode selection and specification
Corrosion Resistance of Electrode Material (Only for Reference)
Molybdenum-containi
ng stainless steel
(0Cr18N12Mo2Ti)
Applicable: Domestic/industrial water, sewage, weak acid and
alkali saline as well as concentrated nitric acid at room
temperature.
Not Applicable : Hydrofluoric acid, hydrochloric acid, chlorine,
bromine, iodine and other media.
Applicable: Non-oxidizing acid, such as hydrochloric acid and
hydrofluoric acid of certain concentration and other alkali liquor
with a concentration of no less than 70% sodium hydroxide
Not Applicable: Nitric acid and other oxidizing acids
Applicable: corrosion by oxidizing acids such as Nitric acid, acid
mixtures and sulfuric acid and environmental corrosion by
oxidation resistant salt or that contains other oxidants. For
example, Hypochlorite solution higher than room temperature is
strongly corrosion resistant to sea water.
Not Applicable: Reducing acid and chloride such as
hydrochloric acid
Applicable: chloride, hypochlorite, sea water, oxidizing acid. Not
applicable: reducing acid such as hydrochloric acid, sulphuric
acid
Applicable: most acids like concentrated hydrochloric acid, nitric
acid and sulfuric acid including hydrochloric acid and nitric acid
at the boiling point as well as sulfuric acid under 175
℃
.
Not applicable: alkali, hydrofluoric acid and smoke sulfuric acid.
Various acids, bases and salts, excluding aqua regia.
Notes: Due to a wide variety of media, their corrosive substance is affected by
complex factors such as temperature, concentration and tassel.
So this table is only for reference. Users may make their ownchoices based on
actual situation. You may refer to corrosion prevention manual for general media.
But for media with complex compositions like mixed acid, you may need to conduct
corrosion tests for materials to be selected.
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