Hastelloy C276 Hydrogen Cylinders & Valves | Superior Resistance

Description of Hastelloy C276

What is Hastelloy C276?

Hastelloy C276 Hydrogen Cylinders and Valves are engineered for maximum safety and longevity in the hydrogen economy. As the industry moves towards higher pressures for efficient hydrogen storage and hydrogen transportation, the risk of hydrogen embrittlement in standard materials increases. Our Hastelloy C276 alloy provides an unmatched solution with its excellent resistance to a wide range of corrosive media, including wet chlorine, hypochlorite, and sulfuric acid, which can be present as impurities.

This material is specifically selected for Type IV hydrogen cylinders (with a polymer liner) for the metallic bosses and valves, and is fundamental in constructing the inner shells of stationary hydrogen storage tanks and the intricate components within hydrogen valves and regulators.

Key Features of Hastelloy C276

The superior performance of Hastelloy C-276 in hydrogen energy systems stems from its key characteristics:

• Superior Resistance to Hydrogen Embrittlement: The primary reason for selecting Hastelloy C276 in hydrogen service. Its stable microstructure resects the degradation caused by high-pressure hydrogen, preventing crack initiation and propagation.

• Excellent General Corrosion Resistance: Delivers outstanding performance in both oxidizing and reducing environments, making it ideal for hydrogen production, hydrogen storage, and hydrogen transportation where impurity gases may be present.

• High Strength and Durability: Maintains excellent mechanical properties at a wide range of temperatures, from cryogenic conditions (as in liquid hydrogen storage) to moderately elevated temperatures, ensuring structural integrity.

• Versatility in Fabrication: Hastelloy C276 can be readily welded and fabricated into complex shapes required for hydrogen cylinder necks, valve bodies, and other precision hydrogen components.

• Long Service Life & Reliability: Reduces maintenance frequency and replacement costs, offering a total cost-of-advantage for critical hydrogen infrastructure.

Chemical of Hastelloy C276

Application Field of Hastelloy C276 

This hydrogen resistant alloy is specified for numerous critical applications within the hydrogen energy sector:

• High-Pressure Hydrogen Storage Vessels and Cylinders

• Piping and Tubing for Hydrogen Transport

• Components within Electrolyzers for Green Hydrogen Production

• Fuel Cell Stack Components and Bipolar Plates

• Valves, Fittings, and Fasteners in Hydrogen Service

• Compressor Parts for Hydrogen Refueling Stations

Advantage of Hastelloy C276  

About DLX

Founded in 2002, CHANGZHOU DLX ALLOY CO., LTD is a leading manufacturer specializing in the research and production of specialized alloy materials. Our factory has earned both the ISO9001 International Quality Management System Certificate and SGS Certification, affirming our commitment to high standards of quality.

We are experts in the entire alloy production process, including melting, drawing, heat treatment, finishing, and rigorous testing. Our product range includes nickel-based, copper-based, and iron-based alloys, such as super alloys, welding materials, anti-corrosion alloys, precision alloys, FeCrAl alloys, NiCr alloys, CuNi alloys, and thermocouples. These are available in various forms including wire, strip, ribbon, bar, tube, and plate.

FAQ:

Q1: Why is Hastelloy C-276 preferred over stainless steel for hydrogen applications?

A: Standard stainless steels are highly susceptible to hydrogen embrittlement, especially under high pressure, leading to loss of ductility and cracking. Hastelloy C-276, as a hydrogen resistant alloy, maintains its mechanical integrity and resembrittlement, ensuring long-term safety and reliability in hydrogen storage and transport systems.

Q2: Can Hastelloy C-276 be used in high-temperature hydrogen environments?

A: Yes. Hastelloy C-276 retains excellent mechanical strength and corrosion resistance at elevated temperatures, making it suitable for various stages within hydrogen production and processing where heat is a factor.

Q3: What forms of Hastelloy C-276 are available for hydrogen component manufacturing?

A: We supply Hastelloy C-276 in various forms to meet your fabrication needs, including sheet, strip, plate, bar, wire, pipe, and tubing, specifically for hydrogen energy components.

Q4: Is Hastelloy C-276 suitable for welding in hydrogen service equipment?

A: Absolutely. Hastelloy C-276 is known for its excellent weldability. It can be readily fabricated using common welding methods without undergoing post-weld heat treatment, which is crucial for constructing large hydrogen transport and storage vessels.