When it comes to fasteners, especially those used in highly corrosive environments, Hastelloy is one of the most reliable materials. It offers great resistance to stress corrosion cracking, pitting, and crevice corrosion, among other things. While Hastelloy is a popular choice, different types serve different purposes and have different properties. This blog post will explore the different types of Hastelloy Fasteners and how they can benefit your applications.
What are Hastelloy Fasteners?
Hastelloy Fasteners are an incredibly strong and corrosion-resistant material commonly used in many industrial, marine, and chemical engineering applications. They are manufactured from a blend of nickel-chromium-molybdenum alloys, making them resistant to stress corrosion cracking, pitting, erosion, and even weakening caused by chemical reactions in extreme environments. Their resistance to high levels of heat and pressure makes them ideal for fastening projects on platforms such as oil rigs or maritime vessels that require a reliable fastener in harsh conditions. The additional coating layer can be provided for enhanced strength, resulting in added reliability even at temperatures up to 1000 degrees F (540°C). These fasteners can resist chemicals like chlorides, sulphuric acid, hydrochloric acid and hydrogen chloride. These features make Hastelloy Fasteners suitable for extremely challenging projects such as nuclear reactors found on submarines or space shuttles.
Exploring the Different Types of Hastelloy Fasteners
Hastelloy C-276 Fasteners
Hastelloy C-276 is a versatile alloy with excellent resistance to a wide range of corrosive chemicals, including hydrochloric, sulfuric, and phosphoric acids. It also has good resistance to localized corrosion, such as pitting, crevice, and stress corrosion cracking. Hastelloy C-276 fasteners are commonly used in chemical processing, pollution control, and pulp and paper industries.
Hastelloy B-2 Fasteners
Like Hastelloy C-276, Hastelloy B-2 has excellent resistance to a broad range of corrosive chemicals, but its corrosion resistance is better in reducing environments. This material also has excellent resistance to stress corrosion cracking and pitting. Hastelloy B-2 fasteners are typically used in chemical, pharmaceutical, and food processing.
Hastelloy C-22 Fasteners
Hastelloy C-22 is an improved version of Hastelloy C-276, with better resistance to pitting, crevice corrosion, and intergranular attack. It also offers excellent resistance to various corrosive chemicals, including oxidizing and reducing environments. Hastelloy C-22 fasteners are commonly used in chemical processing, marine, and petrochemical industries.
Hastelloy X Fasteners
Hastelloy X is a nickel-based superalloy that offers excellent high-temperature corrosion and oxidation resistance. It also has good resistance to stress corrosion cracking and pitting. Hastelloy X fasteners are typically used in gas turbine engines, combustion chambers, and afterburners.
Hastelloy G-30 Fasteners
Hastelloy G-30 is a nickel-chromium-iron alloy with excellent resistance to sulfuric acid, hydrochloric acid, and phosphoric acid. It also has good resistance to pitting, crevice corrosion, and stress corrosion cracking. Hastelloy G-30 fasteners are commonly used in chemical processing, pharmaceuticals, and power generation.
Conclusion:
Ultimately, the choice of Hastelloy fasteners depends on the specific application and the environment in which they will be used. Choosing the right material and type of Hastelloy fasteners can help ensure optimal performance and longevity. If you are still determining which type of Hastelloy fasteners to use, it is always best to consult a knowledgeable supplier or engineer who can guide you through the selection process. This blog post has given you a better understanding of the different types of Hastelloy fasteners available and how they can benefit your applications.