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| Quantity: | |
|---|---|
(as per ASTM B622)
Grade | Ni | Cr | Mo | Fe | C | Si | Co | Mn | P | S | Cu | Al |
C2000 | Balance | 22.00-24.00 | 15.00-17.00 | 3.0 | ≤0.01 | ≤0.08 | ≤2.00 | ≤0.50 | ≤0.025 | ≤0.01 | 1.30-1.90 | 0.50 |
Hastelloy C2000 seamless pipe and tube (UNS N06200, EN 2.4675) is a next-generation nickel-chromium-molybdenum-copper alloy designed to excel in mixed acid environments where both oxidizing and reducing conditions coexist. Composed of 55% nickel, 23% chromium, 16% molybdenum, 1.6% copper, and trace tungsten/cobalt, it bridges the performance gap between C22 (high Mo) and C276 (balanced Cr/Mo) by offering improved oxidation resistance and copper-enhanced sulfuric acid tolerance. Manufactured via seamless hot-rolling and cold-drawing to ensure uniform wall thickness, it complies with standards like ASTM B622 and ASME SB622.
The alloy’s unique composition provides a synergistic effect: chromium for oxidizing resistance, molybdenum for reducing conditions, and copper for sulfuric acid tolerance, making it a versatile solution for complex chemical processes.
Mixed Acid Resistance: Resists sulfuric acid (up to 70% at 120°C), nitric acid (up to 90% at 150°C), and their mixtures, outperforming C22 in high-nitric acid environments.
Superior Crevice Corrosion Resistance: Passive film stability in chloride-rich crevices (e.g., gasket interfaces) reduces the need for design modifications to prevent localized attack.
High-Temperature Strength: Maintains tensile strength up to 1000°C and resists carburization in industrial furnace atmospheres, though it is primarily optimized for chemical process temperatures (<300°C).
Weldability & Formability: Can be welded with N06200 filler metal using GTAW; cold forming requires intermediate annealing for wall thickness >2 mm to prevent work hardening.
(as per ASTM B622)
Grade | Tensile Strength ksi(MPa) | Yield Strength ksi(MPa) | Elongation (%) |
C2000 | ≥100(690) | ≥45(310) | ≥45 |
Hastelloy C-2000 (UNS N06200) is a nickel-chromium-molybdenum alloy known for its outstanding corrosion resistance. Let’s explore its applications in various industries:
Chemical Processing:
Hastelloy C-2000 is widely used in chemical processing equipment due to its excellent resistance to highly acidic environments.
It finds applications in reactors, heat exchangers, and other components exposed to aggressive chemical media.
Desalination Plants:
The alloy is frequently used in desalination plants, where it exhibits excellent resistance to both seawater and brine solutions.
Its corrosion resistance makes it ideal for these critical applications.
Marine Engineering:
In marine environments, Hastelloy C-2000 is suitable for marine fixtures, pump and mixer shafts, and other components.
Its ability to withstand saltwater corrosion ensures longevity in harsh conditions.
Furnaces and Gas Turbines:
Hastelloy C-2000 finds use in furnaces and gas turbines due to its high-temperature strength and corrosion resistance.
It contributes to reliable performance in extreme heat environments.
Nuclear Power Plants:
The alloy is employed in nuclear power plants for various components.
Its resistance to both oxidizing and reducing environments ensures safety and durability.
Remember that Hastelloy C-2000's versatility and exceptional properties make it valuable in demanding industrial settings.
