• Product features:

•                 Hastelloy alloy plates are suitable for various chemical industries containing oxidizing and reducing media. The high content of molybdenum and chromium makes the alloy resistant to chloride ion corrosion, while tungsten further improves its corrosion resistance. At the same time, C-276 Hastelloy tube is one of the only materials resistant to humid chlorine, Hypochlorite and Chlorine dioxide solutions, and has significant corrosion resistance to high concentration chloride solutions such as Iron(III) chloride and Copper(II) chloride.

  Application fields, heat exchangers, bellows compensators, chemical equipment, flue gas desulfurization and denitrification, papermaking industry, aerospace applications, acidic environments

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  ① In both oxidation and reduction atmospheres, it exhibits excellent corrosion resistance to most corrosive media.

  Hastelloy tube

  ② Excellent resistance to pitting, Crevice corrosion and stress cracking corrosion.

   

Product parameters:  Hastelloy alloy

    C-276 Chemical composition and characteristics

          The various corrosion data of Hastelloy C-276 alloy are typical, but they cannot be used as specifications, especially in unknown environments where testing is necessary to select the material. There is not enough Cr in Hastelloy C-276 alloy to resist corrosion in strong oxidizing environments, such as hot concentrated nitric acid. The generation of this alloy is mainly aimed at the chemical process environment, especially in the presence of mixed acids, such as the discharge pipes of flue gas desulfurization systems.

The mechanical properties of Hastelloy alloy are very outstanding, with high strength and toughness, making it difficult to machine. Moreover, its strain hardening tendency is extremely strong, and when the deformation rate reaches 15%, it is about twice that of 18-8 stainless steel. Hastelloy alloy also has a medium temperature sensitization zone, and its sensitization tendency increases with the increase of deformation rate. When the temperature is high, Hastelloy alloy is prone to absorbing harmful elements, resulting in a decrease in its mechanical properties and corrosion resistance.

    C-22 Chemical composition and characteristics

            Hastelloy C-22 is a high corrosion resistance alloy developed by Hastelloy in the 1990s. It is mainly composed of elements such as nickel, chromium, molybdenum, tungsten, and iron, with nickel content accounting for over 60%. This alloy has excellent corrosion resistance and can operate stably for a long time in harsh industrial environments, withstanding extremely high temperatures and pressures. It has excellent corrosion resistance, oxidation resistance, and heat resistance, and can operate stably for a long time in strong acid and alkali corrosive media such as hydrogen chloride, sulfuric acid, nitric acid, etc. At the same time, it can also withstand heavy loads under high temperature and pressure conditions, and is not easy to deform and crack. It has been widely used in Coal gasification, chemical industry, petrochemical industry, metallurgy, environmental protection and other fields. For example, as an efficient heat exchanger, it ensures the transfer efficiency of heat sources in chemical production; As a anti-corrosion material, it can reduce maintenance costs and downtime during the production process; At the same time, its corrosion resistance and sealing performance also make it an important material for preparing high-purity chemicals.

     C-4 Chemical composition and characteristics

            Hastelloy C-4 is an austenitic low-carbon nickel molybdenum chromium alloy. The main difference between Nicrofer6616hMo and other early developed alloys with similar chemical composition is their low carbon, silicon, iron, and tungsten content. This chemical composition makes it exhibit excellent stability at 650-1040 ℃, improving its resistance to intergranular corrosion. Under appropriate manufacturing conditions, it can avoid edge corrosion sensitivity and weld heat affected zone corrosion. The high content of molybdenum and chromium enables HastelloyC-4 alloy to resist corrosion from various chemical media, including reducing media such as phosphoric acid, hydrochloric acid, sulfuric acid, chlorine gas, organic or inorganic chlorine containing media. Due to its high nickel content, HastelloyC-4 can effectively resist stress corrosion cracking caused by chlorine, even in hot chloride solutions.

C-4 has been widely used in most chemical fields and high-temperature environments.

Typical application areas: flue gas desulfurization systems, acid washing and acid regeneration factories, acetic acid and agricultural chemical production, titanium dioxide production (chlorine method), electrolytic plating, etc.

      B-3 Chemical composition and characteristics

               Hastelloy B-3 is a new member of the nickel molybdenum alloy family, which has excellent corrosion resistance to hydrochloric acid at any temperature and concentration. At the same time, it also has good corrosion resistance to sulfuric acid, acetic acid, formic acid, phosphoric acid, and other non oxidizing media. Due to adjustments made to its chemical composition, its thermal stability has been significantly improved compared to the original B-2 alloy. B-3 alloy has high resistance to pitting corrosion, stress corrosion, knife edge corrosion, and corrosion in the heat affected zone of welding. Maintain excellent plasticity even when exposed to medium temperature instantaneously; Excellent resistance to pitting corrosion and stress corrosion cracking; Excellent resistance to knife edge corrosion and heat affected zone corrosion; Excellent resistance to acetic acid, acetic acid, phosphoric acid, and other non oxidizing acids; Excellent resistance to hydrochloric acid corrosion at various concentrations and temperatures; B-3 alloy can be used for all previous uses of B-2 alloy. Like B-2 alloy, B-3 is not recommended for use in environments where trivalent iron salts and divalent copper salts exist, as these salts can quickly cause corrosion damage. When hydrochloric acid comes into contact with iron and copper, it undergoes chemical reactions to form trivalent iron salts and divalent copper salts.