What are the metal materials resistant to dilute hydrochloric acid?

The corrosion resistance and applications of commonly used metal and alloy materials are roughly as follows: ① Cr18Ni9Ti stainless steel (also known as nickel-chromium stainless steel) can resist exposure to the atmosphere, water, strongly oxidizing acids, organic acids, alkalis with a concentration of less than 30%, and chlorinated compounds; it is not resistant to non-oxidizing acids such as sulfuric acid and hydrochloric acid. It is widely used in instruments as a general corrosion-resistant material. ②Cr18Ni12Mo2Ti stainless steel (also known as molybdenum-2-titanium stainless steel) is resistant to corrosion by sulfuric acid and chlorides. It is superior to Cr18Ni9Ti stainless steel, but it is not resistant to hydrochloric acid. It can be used as a substitute for nickel, and it is capable of withstanding corrosion from high-concentration alkalis and chlorine oxides. It can be utilized as the seat and core of control valves, as well as the sensing elements and diaphragm materials in turbine flow meters, differential pressure, and pressure transmitters ； ③The Ni70Cu30 alloy (also known as Monel alloy), due to its high nickel content, not only possesses good alkali resistance but also resistance to non-oxidizing acids; it exhibits particularly good corrosion resistance to hydrofluoric acid. However, it is not resistant to strong oxidizing acids and solutions. It can be used as corrosion-resistant materials for control valves, measuring elements in transmitters, diaphragms, etc ； ④Nickel-chromium-iron-molybdenum alloys (Hastelloy); Hastelloy B contains 26%–30% molybdenum, while Hastelloy C contains 14%–16% chromium. They can resist corrosion by hydrochloric acid, sulfuric acid, nitric acid, and various other acids, as well as by alkalis and hydroxides. They can be used as materials for control valves, instrument components, and diaphragms ； ⑤The Ni76Cr16Fe7 alloy (Inconel alloy), due to its high nickel content, is primarily used as a material resistant to high temperatures and alkalis as well as sulfides; it can also be employed as an anti-corrosion material for control valves ； ⑥ Titanium and titanium alloys can resist corrosion caused by chlorides, hypochlorous acid, warm chlorine, oxidizing acids, organic acids, and alkalis. However, due to their high cost, they are generally used as anti-corrosion coatings and thin linings for instruments ； ⑦Tantalum (Ta) has corrosion resistance similar to that of stainless steel; aside from hydrofluoric acid, fluorine, fuming sulfuric acid, and alkalis, it can be used as a corrosion-resistant diaphragm for instruments.

There’s nothing suitable; stop doing it and use buckets instead. Remember to buy a few more buckets.

The pressure is too high; otherwise, use plastic, as it is very resistant to dilute hydrochloric acid

If the temperature is low, use dual-phase steel.

Made of metal, titanium. The cost is too high. Your operating conditions are suitable for fluorine pumps, those with fluorine-lined interiors. None of the others are suitable

Can fluorine lining be used with pressures up to 40 MPa?

:I didn’t notice L amount. Thought it was 0.4 MPa. . 40 MPa is not enough; it cannot be achieved

Hastelloy B