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HASTELLOY® C-22
The HASTELLOY C-22 alloy is renowned for its outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking. Its high chromium content ensures excellent resistance to oxidizing media, while molybdenum and tungsten offer significant protection against reducing agents. This makes it ideal for environments such as wet chlorine, formic and acetic acids, and ferric chlorides, where other alloys might fail. The alloy’s robustness ensures prolonged material life, reducing maintenance costs and downtime.
One of the key advantages of HASTELLOY C-22 is its ability to withstand highly aggressive chemicals, including oxidizing acid chlorides, nitric acid, and chlorine mixtures. This makes it the preferred choice in chemical process industries where equipment is exposed to harsh chemicals. Its resistance to both oxidizing and reducing conditions ensures reliability across diverse chemical reactions, providing a consistent performance level in multi-purpose plants.
This nickel alloy resists the formation of grain-boundary precipitates in the weld heat-affected zone, making it highly suitable for welding without compromising its integrity. The HASTELLOY C-22 Nickel Alloy Strip performs excellently in both the as-welded condition and post-weld heat treatments, offering improved efficiency and reducing the need for post-welding modifications. This feature is particularly useful in industries where welded structures are prevalent.
The HASTELLOY C-22 Nickel Alloy Strip can be used in a variety of industries, from chemical processing to petrochemical and even pharmaceutical sectors. Its resistance to corrosive environments and high temperatures (up to 1250°F) enables it to perform effectively in reactors, heat exchangers, and other critical components. With ASTM A240 nickel alloy foil properties, this strip is ideal for applications that demand both flexibility and high performance.
The durability of HASTELLOY C-22 is one of its most significant advantages. Its remarkable resistance to stress corrosion cracking and its ability to withstand harsh chemical exposure make it a long-lasting material that reduces the need for frequent replacements. The strip form of this alloy allows for easy integration into various industrial designs, maintaining strength and resistance even in extreme operating conditions.
| C | Cr | Co | Fe | Mn | Mo | Ni | P |
| .010 max | 20-22.5 | 2.5 max | 2.0-6.0 | .50 max | 12.5-14.5 | Balance | .02 max |
| Si | S | W | V | ||||
| .08 max | .02 max | 2.5-3.5 | .35 max |
In the chemical industry, HASTELLOY C-22 Nickel Alloy Strip is widely used in the construction of reactors, heat exchangers, and piping systems that are exposed to corrosive chemicals such as nitric acid, chlorine, and brine. The strip form provides flexibility in manufacturing custom components for these applications. Its high resistance to pitting and crevice corrosion ensures a longer service life compared to other alloys, minimizing repair costs and downtime in chemical plants.
The HASTELLOY C-22 alloy is also crucial in petrochemical and refining processes, where equipment must withstand high temperatures and aggressive chemical environments. In situations where nickel alloy for industry applications require a material that can handle both reducing and oxidizing conditions, HASTELLOY C-22 proves highly reliable. Its ability to resist sulfur compounds, sea water, and chlorides makes it indispensable in these industries.
In pharmaceutical manufacturing, cleanliness and resistance to corrosion are paramount. HASTELLOY C-22 Nickel Alloy Strip is used in pharmaceutical reactors, piping systems, and filtration systems where its resistance to oxidizing and reducing agents ensures safety and durability. This material also excels in maintaining integrity during sterilization processes, making it ideal for the production of medications and chemicals where purity is critical.
The HASTELLOY C-22 Nickel Alloy Strip is commonly used in heat exchangers and other high-temperature environments, providing excellent performance up to 1250°F. Its resistance to high temperatures and corrosive fluids makes it a top choice for industries like power generation and HVAC systems. This alloy offers a combination of heat resistance, mechanical strength, and corrosion resistance that is difficult to match in other materials.
Marine environments expose materials to both corrosive saltwater and fluctuating temperatures, making the HASTELLOY C-22 strip the ideal material for offshore platforms and marine vessels. Its resistance to sea water and ferric chlorides makes it particularly suitable for the construction of marine infrastructure, providing long-term protection against the effects of marine corrosion.
The HASTELLOY C-22 Nickel Alloy Strip can operate safely at temperatures up to 1250°F (675°C). Exceeding this temperature can result in the formation of detrimental phases that may degrade its performance.
Yes, HASTELLOY C-22 has excellent weldability. It resists grain-boundary precipitate formation in the heat-affected zone, making it suitable for welding without significant loss of material integrity. The alloy performs well in the as-welded condition.
This nickel alloy strip is commonly used in the chemical processing, petrochemical, pharmaceutical, and marine industries due to its superior corrosion resistance and high-temperature performance.
Yes, HASTELLOY C-22 is highly resistant to chloride-induced stress corrosion cracking, making it ideal for applications in environments where this type of corrosion is a concern, such as in marine or chemical process environments.
