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Views: 1 Author: Wang Publish Time: 2024-09-13 Origin: Site
Designated as UNS N06200, Hastelloy C2000 is a nickel-chromium-molybdenum alloy with a deliberate amount of copper addition which provides enhanced temperature capability in sulfuric acid, hydrofluoric acid, and dilute hydrochloric acid. The high chromium content maximizes its resistance to oxidizing chemicals and process streams contaminated with ferric ions and dissolved oxygen. Besides, Hastelloy C-2000 has excellent ductility and weldability, as well as has outstanding resistance to stress-corrosion cracking in chloride-bearing solutions. The UNS N06200 alloy is widely used in chemical processing reactors, heat exchangers, petrochemical piping, pharmaceutical industry, gas desulfurization systems.
HASTELLOY C2000 alloy (UNS N06200) is unique among the versatile nickel-chromium-molybdenum materials in having a deliberate copper addition. This provides greatly enhanced resistance to sulfuric acid. It also has a high chromium content, to maximize its resistance to oxidizing chemicals and process streams contaminated with ferric ions and dissolved oxygen.
This alloy was developed to broaden the application range of one alloy. With the addition of Copper to the Nickel-Chromium-Molybdenum system, Hastelloy C2000 is resistant to an extensive range of corrosive chemicals, including sulphuric, hydrochloric and hydrofluoric acids. The combination of Molybdenum and Copper provide excellent corrosion resistance to reducing media, while the high Chromium content gives good oxidising resistance. Like other nickel alloys, Hastelloy C2000 is ductile, easy to form and weld, while possessing excellent resistance to stress corrosion cracking in chloride-bearing solutions.
HASTELLOY C2000 coated electrodes are used for the shielded metal arc welding of C2000 alloy. The deposited weld metal has excellent resistance to uniform corrosion conditions in a variety of media including oxidizing and reducing environments. The alloy makes a great candidate for dissimilar joining of other nickel-chromium-molybdenum alloys and also molybdenum containing stainless steels. The electrodes are also used for the overlay and cladding of carbon steels where enhanced corrosion resistance is needed. Like other nickel alloys, it is ductile, easy to form and weld, and possesses exceptional resistance to stress corrosion cracking in chloride-bearing solutions (a form of degradation to which the austenitic stainless steels are prone). It is able to withstand a wide range of oxidizing and non-oxidizing chemicals, and exhibits outstanding resistance to pitting and crevice attack in the presence of chlorides and other halides.
UNS N06200 combines the alloying elements of nickel, molybdenum, and chromium to produce a material that offers excellent resistance to both oxidizing and reducing environments. It also has great strength at elevated temperatures and superior weldability compared with other nickel alloy materials. The typical chemical composition of Hastelloy C-2000 consists of 20.0% chromium, 17-21% molybdenum, 14.5-16.5% nickel, 2-6% cobalt, 0.35 max% silicon, 0.2 max% manganese and 0.015 max % carbon with a trace amount of phosphorus and sulfur. These combined components make it ideal for applications requiring corrosion resistance in extremely aggressive environments such as paper processing, seawater desalination plants, and flue gas scrubbers in coal-fired power plants.
The Chemical Composition of Hastelloy C2000, % | |
Nickel | Balance |
Cobalt | ≤2 |
Chromium | 23 |
Molybdenum | 16 |
Copper | 1.6 |
Iron | ≤3 |
Manganese | ≤0.5 |
Aluminum | ≤0.5 |
Silicon | ≤0.08 |
Carbon | ≤0.01 |
Hastelloy C2000 is an alloy that exhibits excellent corrosion resistance in a wide variety of media. The alloy is resistant to both acid and alkaline environments, as well as to oxidizing and reducing conditions. Additionally, the alloy is resistant to pitting and crevice corrosion.
Hastelloy C2000 also has high strength at elevated temperatures. The alloy is able to retain its strength up to 2000 degrees Fahrenheit. Additionally, the alloy has good creep resistance, meaning that it will not deform over time when exposed to high temperatures.
Hastelloy C2000 is also a highly weldable alloy. The alloy can be welded using all standard welding methods, including gas tungsten arc welding, gas metal arc welding, and shielded metal arc welding. Additionally, the alloy can be welded using filler metals that are compatible with Hastelloy C2000.
Hastelloy C2000 is also a highly fabricable alloy. The alloy can be easily formed into a variety of shapes and sizes using standard fabrication methods. Additionally, the alloy can be easily welded and machined.
Hastelloy C2000 has good thermal conductivity, meaning that it conducts heat well. This property makes Hastelloy C2000 ideal for use in applications where heat needs to be transferred quickly, such as in heat exchangers or boilers.
Hastelloy C2000 also has good electrical conductivity, making it ideal for use in electrical applications.
1. Chemical Processing
Hastelloy C-2000 is a nickel-chromium-molybdenum alloy that is often used in chemical processing applications. The alloy has excellent resistance to corrosion and is resistant to both oxidizing and reducing environments. Additionally, Hastelloy C-2000 has excellent resistance to pitting and crevice corrosion.
2. Pollution Control
UNS N06200 is also often used in pollution control applications. The alloy has excellent resistance to corrosion by both acidic and alkaline gases, making it ideal for use in scrubbers and other pollution control equipment. Additionally, Hastelloy C-2000 is resistant to chloride stress corrosion cracking, making it an ideal material for use in salt water environments.
3. Nuclear Waste Handling
Hastelloy C-2000 is also frequently used in nuclear waste handling applications. The alloy has excellent resistance to corrosion by both radioactive materials and nuclear waste products. Additionally, Hastelloy C-2000 is resistant to chloride stress corrosion cracking, making it an ideal material for use in salt water environments.
4. Marine Applications
UNS N06200 is also often used in marine applications. The alloy has excellent resistance to corrosion by both sea water and salt spray. Additionally, Hastelloy C-2000 is resistant to chloride stress corrosion cracking, making it an ideal material for use in salt water environments.
5. Desalination Plants
Hastelloy C-2000 is also frequently used in desalination plants. The alloy has excellent resistance to corrosion by both seawater and brine solutions. Additionally, Hastelloy C-2000 is resistant to chloride stress corrosion cracking, making it an ideal material for use in salt water environments
In conclusion, Hastelloy C2000 is an excellent option for applications that require superior corrosion resistance in highly acidic environments such as chemical processing plants or refineries where conventional steel would not be able to withstand harsh conditions. Its equivalents offer similar properties but may have slight variations in their chemical compositions depending on their intended use cases. If you are looking for a material that can withstand corrosive environments with ease, then you should consider using either Hastelloy C2000 or one of its equivalents!
