ASTM B574 UNS N06022 Hastelloy C22 Rod for Marine and Chemical Applications
When equipment is exposed to aggressive chemicals and seawater, material failure is not just inconvenient—it can be catastrophic. That’s why ASTM B574 UNS N06022 Hastelloy C22 Rod has become a critical choice for industries where reliability under harsh conditions is non-negotiable. At DLX, we specialize in supplying high-performance alloys like Hastelloy C22, ensuring our customers have the materials they need to keep operations safe, efficient, and profitable.
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Hastelloy C22, also designated as UNS N06022, is a nickel-chromium-molybdenum-tungsten alloy developed specifically for maximum corrosion resistance in both oxidizing and reducing environments. Unlike stainless steels, which may only resist certain corrosive conditions, C22 provides comprehensive protection, including resistance to pitting, crevice corrosion, and stress corrosion cracking.
The ASTM B574 specification covers nickel alloy rods and bars, guaranteeing chemical composition, mechanical properties, and dimensional accuracy. For DLX customers, this means every C22 rod we supply meets international standards and performs reliably under demanding service conditions.
Specification
item | HC-276 | C-22 | C-4 | B2 | B3 | N |
C | ≤0.01 | ≤0.015 | ≤0.015 | ≤0.02 | ≤0.01 | 0.04-0.08 |
Mn | ≤1 | ≤0.5 | ≤1 | ≤1 | ≤3 | ≤1 |
Fe | 4-7 | 2-6 | ≤3 | ≤2 | ≤1.5 | ≤5 |
P | ≤0.04 | ≤0.02 | ≤0.04 | ≤0.04 | -- | ≤0.015 |
S | ≤0.03 | ≤0.02 | ≤0.03 | ≤0.03 | -- | ≤0.02 |
Si | ≤0.08 | ≤0.08 | ≤0.08 | ≤0.1 | ≤0.1 | ≤1 |
Ni | rest | rest | rest | rest | ≤65 | rest |
Co | ≤2.5 | ≤2.5 | ≤2 | ≤1 | ≤3 | ≤0.2 |
Ti+Cu | -- | -- | ≤0.7 | -- | ≤0.4 | ≤0.35 |
Al+Ti | -- | -- | -- | -- | ≤0.5 | ≤0.5 |
Cr | 14.5-16.5 | 20-22.5 | 14-18 | ≤1 | ≤1.5 | 6-8 |
Mo | 15-17 | 12.5-14.5 | 14-17 | 26-30 | ≤28.5 | 15-18 |
B | -- | -- | -- | -- | -- | ≤0.01 |
W | 3-4.5 | 2.5-3.5 | -- | -- | ≤3 | ≤0.5 |
V | ≤0.35 | ≤0.35 | -- | 0.2-0.4 | -- | ≤0.5 |
Shape | Size (mm) |
Wire | 0.5-7.5 |
Rod/Bar | 8.0-200 |
Strip | (0.5-2.5)*(5-180) |
Tube/Pipe | Custom made |
Sheet/Plate | Custom made |
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The versatility of Hastelloy C22 Rod makes it suitable for a wide range of industries. Here are some of the most common applications:
Marine Engineering: Seawater, especially in warm and stagnant conditions, is one of the most aggressive environments for metals. C22 rods are used for pump shafts, valves, and marine fasteners that must endure prolonged seawater contact without corroding.
Chemical Processing: In industries where equipment is exposed to hydrochloric, sulfuric, and phosphoric acids, C22 offers resistance far superior to stainless steel, ensuring longer service life and reduced downtime.
Pharmaceuticals: For production systems that must maintain purity and withstand aggressive cleaning agents, C22 rods provide both corrosion resistance and material reliability.
Pollution Control: Flue gas scrubbers and waste treatment plants often use components made from C22 rods to survive in acidic condensates and chemical-laden exhaust environments.
Pulp and Paper: In bleaching operations where chlorine-based chemicals are common, C22 rods resist localized attack and ensure consistent performance.
Energy Sector: Whether in geothermal plants or chemical reactors, the alloy withstands high temperatures and corrosive media simultaneously.
Every one of these applications relies on durability, safety, and compliance. By providing ASTM B574 UNS N06022 rods, DLX ensures industries can count on their equipment even under the toughest conditions.
Comparison Table: Hastelloy C22 vs Common Alloys
| Property | ASTM B574 UNS N06022 Hastelloy C22 Rod | Stainless Steel 316L | Alloy 625 Rod |
|---|---|---|---|
| Base Material | Nickel-Chromium-Molybdenum-Tungsten | Iron-Nickel-Chromium | Nickel-Chromium-Molybdenum |
| Corrosion Resistance | Excellent in oxidizing & reducing media | Good in mild chemicals | Excellent but less versatile |
| Chloride Resistance | Superior resistance to pitting/crevice | Moderate | High |
| Temperature Performance | Up to ~1250°C | Up to ~870°C | Up to ~1093°C |
| Weldability | Excellent | Good | Excellent |
| Seawater Resistance | Long-term durability | Limited | Excellent |
| Typical Applications | Marine, chemical plants, pharma, scrubbers | Food, water, architecture | Aerospace, chemical plants |
| Cost Level | Higher | Lower | High |
Global demand for Hastelloy C22 and similar nickel-based alloys has been growing steadily. Several key factors are driving this trend:
Stricter Environmental Standards: More industries are investing in pollution control systems like scrubbers, which require alloys that can resist acidic condensates and aggressive gas streams.
Growth in Marine Infrastructure: With the expansion of offshore oil, gas, and desalination projects, materials that can withstand long-term seawater exposure are increasingly in demand.
Chemical Industry Expansion: The rising global production of chemicals has pushed equipment manufacturers to choose alloys like C22 that minimize downtime and replacement costs.
Focus on Long-Term Reliability: Companies now prioritize life-cycle costs, preferring alloys that extend service life rather than cheaper materials that fail prematurely.
These industry dynamics highlight why DLX sees continued growth opportunities in supplying Hastelloy C22 rods. By aligning with these market needs, we provide not only products but also long-term value.
Choosing the right supplier for Hastelloy C22 Rod is as important as choosing the material itself. DLX delivers a set of advantages that position us as a reliable partner for global customers:
Strict Quality Control: Every rod is tested for chemical composition, tensile strength, hardness, and microstructure to ensure it meets ASTM B574 and customer requirements.
Custom Solutions: DLX offers rods in various diameters, cut-to-length options, and machining services tailored to project specifications.
Strong Logistics Network: We understand that industries need timely deliveries, so we maintain reliable logistics channels to serve global customers without delays.
Expert Support: Our team of specialists assists customers with alloy selection, application advice, and welding guidelines, ensuring maximum material performance.
Competitive Value: While premium alloys like Hastelloy C22 are an investment, DLX ensures customers get the best value by balancing price with uncompromised quality.
Comparing Hastelloy C22 with Other Materials
In industries like marine and chemical processing, stainless steels such as 316L are often considered first because of their affordability. However, in chloride-rich or acidic environments, they fail rapidly. Alloy 625 performs well but is more specialized for high-temperature applications and does not provide the same broad corrosion resistance that C22 offers.
Hastelloy C22 fills this gap, providing versatility in resisting a wide range of chemicals at both ambient and elevated temperatures. This is why, when customers seek a solution that covers multiple corrosion threats, DLX often recommends C22 rods as the most effective long-term choice.
Looking ahead, the use of Hastelloy C22 Rods is expected to expand further as industries adopt stricter safety, environmental, and operational standards. DLX anticipates growing demand in:
Asia-Pacific: Driven by rapid industrialization and chemical plant expansion.
Europe: Where environmental compliance drives material upgrades.
Middle East and North Africa: With large investments in desalination and offshore projects.
North America: In sectors such as pollution control and pharmaceuticals.
By maintaining a robust inventory and providing technical expertise, DLX is prepared to meet these future demands, ensuring our customers can confidently move forward with their projects.
ASTM B574 UNS N06022 Hastelloy C22 Rod is more than just a high-performance material; it is a safeguard against failure in industries where corrosion is the primary challenge. Its resistance to both oxidizing and reducing environments, combined with durability in seawater and high temperatures, makes it indispensable across marine and chemical applications.
At DLX, we pride ourselves on delivering Hastelloy C22 Rods that not only meet international standards but also exceed customer expectations in quality, reliability, and service. As industries worldwide continue to face harsh environments and increasing demands for durability, DLX stands ready to supply the materials that keep operations running safely and efficiently.
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About Us:
Our 12,000㎡ factory is equipped with complete capabilities for research, production, testing, and packaging. We strictly adhere to ISO 9001 standards in our production processes, with an annual output of 1,200 tons. This ensures that we meet both quantity and quality demands. Furthermore, all products undergo rigorous simulated environment testing including high temperature, high pressure, and corrosion tests before being dispatched, ensuring they meet customer specifications.
For all our clients, we offer timely and multilingual after-sales support and technical consulting, helping you resolve any issues swiftly and efficiently.
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FAQs:
Q1: What is ASTM B574 UNS N06022 Hastelloy C22 Rod?
A1: It is a nickel-chromium-molybdenum alloy rod designed for excellent resistance to aggressive oxidizing and reducing environments.
Q2: Which industries commonly use Hastelloy C22 Rod?
A2: It is mainly used in marine, chemical processing, pharmaceutical, pulp and paper, and pollution control industries.
Q3: How does Hastelloy C22 Rod perform in chloride environments?
A3: It offers outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking caused by chlorides.
Q4: Is ASTM B574 UNS N06022 Hastelloy C22 Rod suitable for welding and fabrication?
A4: Yes, it has excellent weldability and can be fabricated using conventional techniques without compromising corrosion resistance.
Q5: Can it be used in high-temperature applications?
A5: Yes, Hastelloy C22 maintains strength and stability at elevated temperatures up to around 1250°C.
Q6: What makes Hastelloy C22 Rod better than stainless steel in certain industries?
A6: Its superior resistance to highly corrosive chemicals, seawater, and mixed chemical conditions makes it preferable over stainless steel.
Q7: What standards does DLX follow when supplying Hastelloy C22 Rod?
A7: DLX ensures compliance with ASTM B574 and international standards, delivering consistent quality with strict testing.
Q8: Why choose DLX for Hastelloy C22 Rod supply?
A8: DLX provides reliable quality, customized dimensions, strong logistics, and technical expertise to support complex projects worldwide.
