Hastelloy C22 Seamless Nickel Alloy Tube - Corrosion Resistant, Chloride Pitting Resistant, Oxidizing Media Resistant
Price:
US $25-60.5 / kg
MOQ:
50 kg
Delivery Time:
Negotiable
Product Description
Hastelloy C22 Seamless Nickel Alloy Tube ASTM B622 Seamless Round Tube
Alloy C22 is an improved nickel-chromium-molybdenum-tungsten alloy designed for use in aggressive industrial environments. This alloy offers excellent resistance to pitting and crevice corrosion in oxidizing and acid chloride environments, and is practically immune to chloride stress corrosion cracking (SCC). Hastelloy C22 demonstrates superior weldability and is commonly used as weld filler material for joining other corrosion-resistant alloys.
Material Composition
Alloy 22 is nickel-base and typically contains 22% chromium, 14% molybdenum, and 3% tungsten. Iron content is normally limited to less than 3%. The high chromium content provides excellent resistance to oxidizing media, while molybdenum and tungsten content ensures resistance to reducing media.
Key Advantages
- Superior overall corrosion resistance compared to Alloy C-276
- Outstanding resistance to chloride pitting, crevice corrosion, and stress corrosion cracking
- Excellent performance in oxidizing aqueous environments including wet chlorine and mixtures containing nitric acid with chloride ions
- Excellent resistance to corrosive attack by seawater under both stagnant and flowing conditions
Chemical Composition (Hastelloy C22, UNS N06220)
| Element | Ni | Cr | Mo | Mn | Si | C | S | P | Cu | V | W | Fe |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MIN | -- | 20.0 | 12.5 | -- | -- | -- | -- | -- | -- | -- | 2.5 | -- |
| MAX | balance | 22.5 | 14.5 | 0.5 | 0.08 | 0.015 | 0.02 | 0.02 | 2.5 | 0.35 | 3.5 | 6.0 |
Mechanical Properties
| Temperature (°F) | 70 | 200 | 400 | 600 | 800 | 1000 | 1200 | 1400 |
|---|---|---|---|---|---|---|---|---|
| Ultimate Tensile Strength (ksi) | 114 | 107 | 98 | 95 | 92 | 88 | 83 | 76 |
| 0.2% Yield Strength (ksi) | 54 | 49 | 41 | 36 | 35 | 34 | 32 | 31 |
| Elongation (%) | 62 | 65 | 66 | 68 | 68 | 67 | 69 | 68 |
| Hardness MAX (HRB) | 95 | -- | -- | -- | -- | -- | -- | -- |
Fabrication Properties
Although ductile enough for cold working, intermediate annealing may be necessary due to work hardening. Forging should be performed between 1750-2050°F followed by rapid cooling. Annealing can be performed at 2020-2150°F followed by rapid quench to avoid formation of detrimental phases. Welding can be accomplished using gas tungsten-arc, gas metal-arc, and shielded metal-arc processes.
Industry Standards
| Product Form | ASTM Specification |
|---|---|
| Pipe Seamless | B622 |
| Pipe Welded | B619 |
| Tube Seamless | B622 |
| Tube Welded | B626 |
| Sheet/Plate | B575 |
| Bar | B574 |
| Forging | B564 |
| Fitting | B366 |
Industrial Applications
- Pharmaceutical industries for fittings and tubing to prevent contamination from corrosion-related failures
- Cellophane manufacturing processes
- Chlorination systems
- Pesticide production facilities
- Incineration scrubber systems
- Chemical process industry equipment including flue gas scrubbers, sulfur dioxide scrubbers, pulp and paper bleach plants, pickling systems, and nuclear fuel reprocessing
- Waste water processing systems
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Company
JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
Location
No.283-1, Youyi Middle Road, Xishan District, Wuxi City, Jiangsu Province
Contact Person
Gao Ben