C-2000 Hastelloy (UNS N06200) – Composition, Properties, and Uses
UNS N06200 is a nickel-chromium-molybdenum alloy with outstanding corrosion resistance. It is resistant to corrosion from sulfuric acid, hydrochloric acid, and other chloride-bearing media. This makes it an ideal material for use in chemical processing applications. In this article, we will take a look at the chemical composition of Hastelloy C-2000 and discuss some of its equivalents.
C-2000 Hastelloy Chemical Composition
UNS N06200 has a minimum of 55% nickel content and 20% chromium content. It also contains molybdenum (17%), tungsten (2%), and cobalt (2%). It also contains trace amounts of iron, manganese, silicon, carbon, nitrogen, phosphorus, sulfur, and copper. The addition of these elements gives the alloy excellent corrosion resistance in highly acidic environments.
Element | Content (%) |
---|---|
Nickel, Ni | 59 |
Chromium, Cr | 23 |
Molybdenum, Mo | 16 |
Copper, Cu | 1.6 |
Silicon, Si | 0.080 |
Carbon, C | 0.010 |
C-2000 Hastelloy Chemical Properties
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.
C-2000 Hastelloy Physical Properties
Properties | Metric | Imperial |
---|---|---|
Density | 8.50 g/cm³ | 0.307 lb/in³ |
The primary benefit of using Hastelloy C2000 is its exceptional corrosion resistance in both acidic and alkaline environments. It also stands up extremely well to oxidation and chloride stress corrosion cracking even at elevated temperatures up to 2000°F (1093°C). Additionally, it has excellent weldability, allowing for easy fabrication when needed. Finally, this alloy has a high tensile strength, making it ideal for use in demanding situations like offshore drilling platforms or harsh industrial environments where reliable performance is required over extended periods.
Corrosion Resistance
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.
High Temperature Strength
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.
Good Weldability
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.
Good Fabricability
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.
Good Thermal Conductivity
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.
Good Electrical Conductivity
Hastelloy C2000 also has good electrical conductivity, making it ideal for use in electrical applications.
C-2000 Hastelloy Mechanical Properties
Properties | Metric | Imperial |
---|---|---|
Tensile strength (@ thickness 25.4 mm/ 1.00 in.) | 752 MPa | 109000 psi |
Yield strength (@ 20°C/ 68°F, thickness 12.7 mm/0.5000 in, 0.2% offset) | 345 MPa | 50000 psi |
Elongation at break (@ thickness 6.35 mm/0.250 in., in 50.8 mm) | 62% | 62% |
C-2000 Hastelloy Thermal Properties
Properties | Metric | Imperial |
---|---|---|
Thermal expansion co-efficient (@ 25-100°C/ 77-212°F) | 12.4 µm/m°C | 6.89 µin/in°F |
Thermal conductivity | 9.10 W/mK | 63.2 BTU in/hr.ft².°F |
C-2000 Hastelloy Equivalent
There are several alloys which have comparable properties to UNS N06200 but differ slightly in their chemical composition. These include Alloy 20Cb3®, Incoloy® 020, Incoloy® 800HT/HTR, Monel® 400/K500 and Nimonic® 115/255/263/265. All these alloys have similar properties to the original Hastelloy C-2000 but may have different levels or combinations of certain elements, such as copper or chromium, depending on their intended use cases. For example, Alloy 20Cb3® is designed for use in harsher environments than Incoloy® 800HT/HTR due to its higher chromium content (27%). Similarly, Nimonic® 115/255/263/265 contains higher levels of nickel (up to 70%) while still providing good resistance to corrosion in acidic environments.
STANDARD | WERKSTOFF NR. | UNS | AWS |
---|---|---|---|
Hastelloy C2000 | 2.4675 | N06200 | AWS 055 |
C-2000 Hastelloy Uses
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
Conclusion
In conclusion, Hastelloy C-2000 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 C-2000 or one of its equivalents! Thanks for reading!
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