Hastelloy C22 Products

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DETAILED INFORMATION
In addition to having improved resistance to pitting, crevice corrosion, and stress corrosion cracking, Hastelloy C22, also known as alloy C22, is an austenitic nickel-chromium-molybdenum-tungsten alloy. In addition to providing good resistance to oxidizing media, the high chromium content and molybdenum and tungsten content provide good resistance to reducing media.
Additionally, this nickel steel alloy has excellent resistance to oxidizing aqueous media such as wet chlorine or mixtures containing nitric acid or oxidizing acids containing chlorine ions. In addition to oxidizing acid chlorides, Hastelloy C-22 is also resistant to wet chlorine, formic and acetic acids, ferric and cupric chlorides, seawater, brine, and many other mixed or contaminated chemical solutions.
In multi-purpose plants, where such "upset" conditions often occur, this nickel alloy offers optimum resistance to reducing and oxidizing conditions. Due to its resistance to grain-boundary precipitates in the weld heat-affected zone, this nickel alloy is suitable for most chemical process applications as welded. As a result of the formation of detrimental phases, alloy C-22 should not be used above 1250°F.
With a nominal chemical composition of 56% nickel, 22% chrome, and 13% molybdenum, with additional iron, tungsten, and cobalt, alloy C22 is a nickel-chromium-molybdenum solid solution strengthened superalloy. Known as Hastelloy C22 and UNS N06022, C22 has excellent corrosion and oxidation resistance, great mechanical properties over a wide temperature range, and good fabrication properties.
C-22 has excellent resistance to aggressive oxidizing aqueous media, such as wet chlorine and mixtures containing nitric acid or oxidizing acids.
Unified Numbering System (UNS) number N06022 identifies Hastelloy C-22 as a nickel-based alloy with high nickel (56%), chromium (22%), and molybdenum (13%). There is the same UNS number for Werkstoff's number 2.4602, Inconel Alloy 22, Alloy 22, and ATI 22TM alloy.
Applications for C-22 include buffer solutions, active pharmaceutical ingredients (APIs), fabric softeners, cleaning supplies, and fish, soy, and chili sauces.
When super austenitic stainless steels (AL-6XN®, 904L, and 254 SMO®) and duplex stainless steels (2205 and 2507) cannot withstand highly aggressive media, C-22 is a great alternative. A nickel-chromium-molybdenum-tungsten alloy, it has a better resistance to corrosion than other Ni-Cr-Mo alloys, such as Hastelloy C-276, C-4, and alloy 625, because it is a nickel-chromium-molybdenum-tungsten alloy.
As well as its excellent resistance to natural corrosion, intergranular corrosion, pitting and crevice corrosion, and stress corrosion cracking, Hastelloy C-22 is used in many applications. Water treatment plants, chlorination plants, incinerators, and other applications use it because it is resistant to oxidizing and reducing conditions and prevents aqueous corrosion. A corrosion resistance test is conducted on the material of the C-22 wire. However, with the limited composition of the alloy, it is able to provide enhanced functionality due to its limited composition.
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Hastelloy C22 Specification
Standard | Hastelloy C22 |
UNS | N06022 |
Werkstoff Nr. | 2.4617 |
Hastelloy Alloy C22 Chemical Equation
Hastelloy C22 | |
Ni | Bal |
C | 0.010 max |
Cr | 20 – 22.5 |
Co | 2.5 max |
Fe | 2 – 6 |
Mn | 0.50 max |
Mo | 12.5 – 14.5 |
P | 0.02 max |
Si | 0.08 max |
S | 0.02 max |
W | 2.5 – 3.5 |
V | 0.35 max |
Alloy C22 Mechanical
Density | 8.69 g/cm3 |
Melting Point | 1399 °C (2550 °F) |
Tensile Strength | Psi – 1,00,000, MPa – 690 |
Yield Strength (0.2%Offset) | Psi – 45000, MPa – 310 |
Elongation | 45 % |
Physical Properties Of Hastelloy(R) C22
Properties | Metric | Imperial |
Density | 8.69 g/cm³ | 0.314 lb/in³ |
Melting point | 1399°C | 2550°F |
Manufacturing Process Of Hastelloy(R) C22(R)
PROCESS |
DESCRIPTION |
Steel Making |
Electric Arc Furnace followed by Vacuum Oxygen Decarburization (VOD) or Argon Oxygen Decarburization (AOD). |
Pipe Making |
Conventional Seamless Cold Finished Pipe and Tube Manufacturing Processes. |
Heat Treatment |
Cannot be hardened by heat treatment. Typically provided in the annealed condition. |
Hastelloy C22 Temperature Range
HASTELLOY C-22 alloy (N06022, W86022) |
|||
ASME |
Section l |
1250°F (677°C)1 |
|
Section lll |
Class 1 |
800°F (427°C)1 |
|
Class 2 |
1250°F (677°C)2 |
||
Class 3 |
1250°F (677°C)2 |
||
Section Vlll |
Div. 1 |
1250°F (677°C)1 |
|
Div. 2 |
1250°F (677°C)1 |
||
Section Xll |
650°F (343°C)3 |
||
B16.5 |
1250°F (677°C)4 |
||
B16.34 |
1250°F (677°C)5 |
||
B31.1 |
800°F (427°C)6 |
||
B31.3 |
800°F (427°C)7 |
||
VdTÜV (doc #) |
844°F (450ºC)8, #479 |
Fabrication And Heat Treatment
Machinability
Hastelloy(r) C22(r) can be machined using high-speed steel tooling. Carbide tools are used for milling or turning. Machining operations can be performed using conventional coolants.
Forming
Hastelloy(r) C22(r) can be easily hot or cold formed followed by heat treatment.
Welding
Except for the submerged arc welding method, Hastelloy(r) C22(r) can be welded using all other welding methods.
Heat Treatment
Hastelloy(r) C22(r) is heat treated by annealing at 1122°C (2050°F) followed by quenching.
Forging
Hastelloy(r) C22(r) is hot forged at 1149°C (2100°F) followed by heat treatment.
Hot Working
Hastelloy(r) C22(r) has good hot working capacity.
Cold Working
Hastelloy(r) C22(r) has cold working capacity.
Aging
Hastelloy(r) C22(r) is aged at 510 to 1038°C (950 to 1900°F) to increase its tensile strength and hardness. However, V-notch impact strength can be degraded if aging is done above 760°C (1400°F).
Hardening
Hastelloy(r) C22(r) cannot be hardened by heat treatment or cold working.
Hastelloy C22 Price List
Price of Hastelloy C22 Seamless Pipe: $ 58500 ~ $ 60000 USD/Ton
Price of UNS N06022 Seamless Pipe: $ 58500 ~ $ 60000 USD/Ton
Price of Hastelloy C22 ERW/Welded Tube: $ 58500 ~ $ 60000 USD/Ton
Price of UNS N06022 ERW/Welded Tube: $ 58500 ~ $ 60000 USD/Ton
Applications Of Hastelloy C22
- Pharmaceutical industries use alloy C-22 fittings and tubing to avoid contamination caused by corrosion-related failures
- Cellophane manufacturing
- Chlorination systems
- Pesticide production
- Incineration scrubber systems
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