All you need to know about Hastelloy C22 Sheets
Hastelloy C22 is also known as the C22 alloy, which is a flexible austenitic alloy based on tungsten, molybdenum, nickel and chromium. This alloy also has well-improved resistance to crevice corrosion, pitting, and cracking stress corrosion. The higher content of chromium provides excellent resistance to oxidizing media with chromium content, whereas the content of tungsten and molybdenum offers excellent resistance to acid reduction. Here, too, the nickel alloy is resistant to a mixture of nitric acid and oxidizing acid with chloride ions and wet chlorine oxidizing media.
The Hastelloy C22 sheets are extremely resistant to chloride oxidizing acid, formic acid, cupric chloride, marine water, brine, etc. This nickel alloy provides excellent resistance to the atmosphere in which the process streams experience reducing and oxidizing conditions. It also resists grain boundary formations at the affected region of weld heat, making it suitable for many welded condition applications.
Characteristics of Hastelloy C22 Sheets
Many good characteristics have been found in the Hastelloy C22 sheet & plate product. For many difficult applications, this has become an ideal alternative. Strong toughness, greater strength, long-lasting strength, high tensile strength, flexibility, durability, etc. are given by the product. It is also able to withstand general corrosion, pitting, oxidation, cracking by stress corrosion and resistance to crevice corrosion.
The material of nickel also provides greater resistance to those environments in which oxidizing and decreasing conditions are encountered in the streaming process. The plates in the weld heat affected regions are highly resistant to the creation of grain-boundary precipitates. The plates have exceptional strength and ductility. With cold working procedures, the plates are easily formed and transitional annealing is achieved due to hardening of the work.
In addition, they are annealed at a temperature range of 2020-2150 degrees F via a fast quenching process. Essentially, the plates are deeply drawn, punched and pressed. Since the plates during welding and heating are non-sensitized. In addition, the processing of these plates is carried out by high-speed tooling.
In acid chloride, acetic acids, formic acids, cupric chloride, ferric chloride, contaminated chemical solutions, the other Hastelloy has resistance. In both inorganic and organic solutions, it can work well. The nickel alloy can provide optimum environmental resistance that needs oxidizing and reducing conditions. These sheets are also helpful for all-purpose plants. Some of the characteristics of the Hastelloy C22 Sheets are given below.
- It demonstrates resistance to crevice corrosion, pitting corrosion and cracking stress corrosion.
- It demonstrates outstanding resistance to media oxidization and media reduction.
- It is very immune to aqueous media.
- With a large range of process conditions, such as potent oxidizers such as acetic anhydride, brine solution, ferric acids and seawater, it has exceptional resistance.
- It also demonstrates resistance to grain-boundary precipitates.
In what applications are Hastelloy C22 sheets used?
A list of application types is given below—
- Chlorination devices
- The development of cellophane
- Producing pesticides
- Recycling of waste water
- Scrubber incineration devices
Tubing and fittings are used by the pharmaceutical industry to prevent contamination caused by corrosion failure.
Industries in chemical processes such as chlorination systems, gas scrubbers, scrubbers for sulphur dioxide, nuclear fuel, picking systems, paper bleaching plants, etc.
Fabrication of Hastelloy C-22 Sheets
It is ductile and can be easily formed by intermediate annealing, cold working, and can be hardened by work. In the temperature range 1750-2050 degree F that is followed by cooling, forging could be performed, the annealing could be performed in the 2020-2150 degree F range that is followed by quenching. The cooling could be accompanied by acceleration that could prevent creation. The welding of the tubes can be carried out via the processes of the shielded metal arc, gas tungsten arc, and metal arc.
In order to ensure the consistency of the product, there are several checks the industry performs on the product. Positive material identification test (PMI), toughness test, intergranular corrosion test (IGC), pitting resistance test, macro test, micro test, chemical test, mechanical test, flattening test, flaring test, etc. are some tests which are performed.