Instrument selection: Electrode and lining material performance table

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I. Table of electrode material properties Material Code Corrosion resistance Stainless steel 316L V: Suitable for industrial water, domestic water, mildly corrosive wastewater, neutral solutions, as well as weak acids such as carbonic acid and acetic acid. Hastelloy C Hc: Resistant to oxidizing acids such as nitric acid, mixed acids, and mixtures of chromic acid and sulfuric acid. Salts that are also resistant to oxidation, or environments containing other oxidizing agents, can also resist corrosion. It exhibits good corrosion resistance to seawater and alkaline solutions. Hastelloy B Hb has good resistance to non-oxidizing acids such as sulfuric acid, phosphoric acid, and hydrofluoric acid, as well as to alkalis and salts. Titanium is resistant to corrosion by seawater, various chlorides and hypochlorites, as well as many hydroxides. Tantalum can resist corrosion by almost all chemical agents, with the exception of hydrofluoric acid. Because it is expensive. Used only for hydrochloric acid and concentrated sulfuric acid. Tungsten carbide (W) possesses excellent wear resistance and is specifically designed for use in media subject to wear, such as sludge and pulp.

II. Properties of lining materials
Lining material | Corrosion resistance | Operating temperature | Application range
Polyperfluoroethylene propylene (FEP): 1. Its heat and corrosion resistance are comparable to those of PTFE. 2. It has high mechanical strength and good wear resistance; the lining is not easily damaged during surface cleaning. 3. Its inner surface is smooth, making it difficult for deposits to adhere. 4. It offers excellent resistance to negative pressure and vacuum conditions. Operating temperature: -40–180°C. Suitable for all fluids, including those with high wear characteristics such as mortar. Like PTFE, it can also be used in media requiring hygiene standards, such as beverages.

Chloroprene rubber (Ne): Resistant to corrosion by low-concentration acids, bases, and salts. Operating temperature: -20–70°C. Suitable for industrial water, wastewater, and solutions containing low-concentration acids, bases, and salts.

Polyurethane rubber (Po): Has excellent corrosion resistance and is specifically designed for use in highly abrasive slurries; it is not resistant to corrosion. Operating temperature: -10–60°C. Suitable for liquids containing solid particles, such as cement slurry and mineral slurry.

Polytetrafluoroethylene (PTFE): Can resist corrosion from almost all chemical agents, but its wear resistance is poor. Operating temperature: -40–180°C. Not suitable for use in pipelines under negative pressure or with highly abrasive fluids