Hastelloy C Dry-Disconnect Couplings: The Choice for Corrosive Media
To ensure safety and product purity, processors need components that stand up to corrosive media. Dry-disconnect couplings made with Hastelloy C are an effective solution for the transfer of corrosive media.
This blog explains the key characteristics of Hastelloy C and how dry-disconnect couplings crafted from Hastelloy C optimize challenging transfer operations.
What is Hastelloy C?
Hastelloy C is a highly corrosion-resistant alloy engineered specifically for harsh, corrosive environments, such as chemical and pharmaceutical processing. The material provides protection against pitting and corrosion.
The Science of Strength: Hastelloy C is a high-performance nickel-chromium-molybdenum alloy classified as an ASTM A494, Grade CW2M equivalent.
Engineered Stability: Hastelloy C is an exotic metal designed to handle aggressive media and chemicals when stainless steel and other iron-based alloys fail.
Distinction from Alternatives: Hastelloy C offers superior corrosion resistance when compared to Inconel because it has a higher molybdenum content. Hastelloy C provides more versatility than Alloy 20, which was specifically designed for sulfuric acid and phosphoric acid applications.
Key Characteristics of Hastelloy C
The following characteristics make Hastelloy C superior to alternative alloys:
Unmatched Corrosion Resistance: Offers resistance to oxidizing and reducing agents, including sulfuric acid, hydrochloric acid and chlorides.
Thermal and Mechanical Durability: Maintains high strength and structural integrity in high-temperature environments.
Weldability and Reliability: Low-carbon content minimizes carbide precipitation during welding and ensures long-term reliability of Hastelloy C-based components.
Hastelloy C Applications
Corrosion resistance, durability and reliability make Hastelloy C a suitable material for dry-disconnect couplings used in the following environments and applications:
Hazardous Chemical Processing: Transferring aggressive acids and volatile organic liquids.
Pharmaceutical and Biotech: Handling sensitive media that requires non-reactive, high-purity containment.
Petroleum and Energy: Offers reliability and safety in these environments, which are subject to high salinity and/or sulfuric compounds.
What are Hastelloy C Dry-Disconnect Couplings Used For?
Because Hastelloy C provides corrosion resistance and durability, Hastelloy C Dry Link dry-disconnect couplings from Control Devices offer:
Drip-Free Performance: Integrating the material’s durability with Dry Link automatic interlock eliminates spills during hazardous material transfers.
Flow Optimization: The low-restriction, butterfly-style shutoff efficiently and reliably manages high-viscosity fluids without buildup or corrosion-related blockages.
Environmental Compliance: Supports facilities that must meet U.S. Environmental Protection Agency (EPA) and safety standards by preventing leaks at the source in demanding environments.
Frequently Asked Questions
Is Hastelloy C more expensive than stainless steel?
Yes, Hastelloy C is a more costly material. As an exotic nickel alloy, the raw materials required for its composition, specifically nickel and molybdenum, are significantly more expensive than the iron used in standard stainless steel.
Is Hastelloy C compatible with sulfuric acid?
Absolutely. Hastelloy C is widely recognized for its exceptional resistance to aggressive chemicals, particularly sulfuric and hydrochloric acids, making it the preferred choice for aggressive chemical processing.
Is Hastelloy C the same as Inconel?
While both are nickel-chromium-molybdenum alloys, Hastelloy C generally contains a higher molybdenum content, which provides superior resistance to reducing environments compared to the oxidation-focused properties of Inconel.
Can Hastelloy C wetted parts prevent cross contamination?
Yes. Especially when used in a “keyed” configuration, Hastelloy C couplings ensure that only matched sets connect, while the material’s smooth, corrosion-resistance surface prevents the build up of bacteria or previous media.
Operate with Higher Levels of Safety and Efficiency
Don’t let spills and contamination reduce the safety and efficiency of your process. JHFOSTER is more than a distributor, we are your partner in fluid control. Our engineering team can evaluate the media and pressure requirements of your unique application to find the perfect Dry Link configuration. Browse our dry-disconnect offerings and contact us so you can start operating more effectively.
