ASTM B564 Hastelloy C22 Flanges: The Ultimate Choice for Corrosion Resistance
When it comes to industries requiring materials with exceptional resistance to corrosion, C22 Hastelloy Flanges stand out as a premier choice. Hastelloy C22, a nickel-chromium-molybdenum alloy, is known for its versatility and resilience in harsh environments, making it the material of choice for flanges in a wide range of applications. At Amardeep Steel Centre LLP, we specialize in supplying high-quality ASTM B564 Hastelloy C22 Flanges, renowned for their excellent performance in challenging conditions. This content will provide a detailed overview of these flanges, including their properties, advantages, and applications.
What is ASTM B564 C22 Hastelloy Flanges?
ASTM B564 C22 Hastelloy Flanges are made from Hastelloy C22, a nickel-based alloy that includes elements such as chromium, molybdenum, tungsten, and iron. This unique composition provides exceptional resistance to a broad spectrum of corrosive environments, including acidic, alkaline, and marine conditions. The ASTM B564 specification ensures that these flanges meet the required standards for chemical composition, mechanical properties, and dimensions.
These flanges are widely used in industries such as chemical processing, petrochemical, oil and gas, power generation, and pharmaceuticals, where superior resistance to corrosion, oxidation, and pitting is crucial. Their ability to withstand high temperatures and pressures further enhances their suitability for such demanding applications.

Properties of ASTM B564 C22 Hastelloy Flanges
The Hastelloy ASTM B564 C22 Flanges possess a range of remarkable properties that make them ideal for use in highly corrosive environments:
- Corrosion Resistance: The primary advantage of ASTM B564 C22 Hastelloy Flanges is their exceptional resistance to various forms of corrosion. They resist pitting, crevice corrosion, and stress corrosion cracking in acidic environments, such as those containing chlorides, sulfuric acid, hydrochloric acid, and nitric acid.
- High Temperature Stability: These flanges exhibit excellent stability at high temperatures, maintaining their mechanical strength and corrosion resistance even in environments where temperatures can exceed 600°C. This property makes them suitable for applications involving heat exchangers, furnace components, and gas turbines.
- Oxidation Resistance: With a high chromium content, Hastelloy C22 provides excellent oxidation resistance, even at elevated temperatures. This makes the Hastelloy Flanges ASTM B564 C22 perfect for environments exposed to oxidizing media.
- Weldability and Fabricability: The alloy’s unique composition allows for easy fabrication and welding, which is essential for industries that require custom-sized flanges or complex assemblies.
- Mechanical Strength: ASTM B564 C22 Hastelloy Flanges maintain good tensile strength and toughness across a wide temperature range, which ensures durability and reliability in demanding applications.
Advantages of ASTM B564 C22 Hastelloy Flanges
The ASTM B564 C22 Hastelloy Flanges offer several advantages, making them a preferred choice for many industrial applications:
- Versatility in Applications: The superior corrosion resistance of these flanges makes them suitable for a variety of applications across multiple industries, including chemical processing, oil and gas, marine, power generation, and pharmaceuticals.
- Cost-Effective Over Time: Although the initial investment in Hastelloy C22 flanges may be higher compared to other materials, their long-term performance, durability, and resistance to damage reduce maintenance costs and downtime, providing a cost-effective solution over time.
- Enhanced Safety: In industries where safety is paramount, such as chemical and petrochemical plants, the use of Hastelloy ASTM B564 C22 Flanges helps prevent leaks, failures, and catastrophic events due to corrosion-related damage.
- Extended Service Life: Due to their outstanding resistance to corrosion, high temperatures, and oxidation, these flanges have a prolonged service life, reducing the need for frequent replacements and ensuring continuous operations.
- Reduced Environmental Impact: With longer service life and reduced maintenance needs, using these flanges can lead to lower resource consumption and waste generation, aligning with sustainability goals.


Schedule and Size Chart
Nominal Pipe Size (NPS) | Outside Diameter (OD) | Flange Thickness (t) | Raised Face Height (RF) | Bolt Circle Diameter (BCD) | Number of Bolt Holes | Bolt Hole Diameter |
1/2″ | 21.34 mm | 11.18 mm | 1.6 mm | 47.63 mm | 4 | 15.75 mm |
3/4″ | 26.67 mm | 13.34 mm | 1.6 mm | 61.91 mm | 4 | 15.75 mm |
1″ | 33.40 mm | 14.27 mm | 1.6 mm | 73.02 mm | 4 | 15.75 mm |
1-1/2″ | 48.26 mm | 16.66 mm | 1.6 mm | 92.08 mm | 4 | 15.75 mm |
2″ | 60.33 mm | 19.05 mm | 1.6 mm | 120.65 mm | 4 | 19.05 mm |
3″ | 88.90 mm | 23.83 mm | 1.6 mm | 152.40 mm | 4 | 19.05 mm |
4″ | 114.30 mm | 25.40 mm | 1.6 mm | 190.50 mm | 8 | 19.05 mm |
6″ | 168.28 mm | 28.58 mm | 1.6 mm | 241.30 mm | 8 | 22.23 mm |
8″ | 219.08 mm | 31.75 mm | 1.6 mm | 298.45 mm | 8 | 22.23 mm |
Mechanical Properties Chart
Property | Value | Unit |
Tensile Strength (Min) | 690 MPa | Megapascals (MPa) |
Yield Strength (0.2% Offset) | 310 MPa | Megapascals (MPa) |
Elongation in 2 inches (Min) | 40% | Percentage (%) |
Hardness (Max) | 95 HRB | Rockwell B (HRB) |
Specifications Chart
Specification | Details |
Standard | ASTM B564 |
Material | Hastelloy C22 (UNS N06022) |
Flange Types | Slip-On, Weld Neck, Socket Weld, Blind, Threaded, Lap Joint |
Pressure Ratings | Class 150, 300, 600, 900, 1500, 2500 |
Manufacturing Process | Forged |
Sizes | 1/2″ to 24″ NPS |
Chemical Composition Chart
Element | Composition (%) |
Nickel (Ni) | 56.0 min |
Chromium (Cr) | 20.0 – 22.5 |
Molybdenum (Mo) | 12.5 – 14.5 |
Tungsten (W) | 2.5 – 3.5 |
Iron (Fe) | 2.0 – 6.0 |
Cobalt (Co) | 2.5 max |
Carbon (C) | 0.015 max |
Manganese (Mn) | 0.5 max |
Silicon (Si) | 0.08 max |
Phosphorus (P) | 0.02 max |
Sulfur (S) | 0.02 max |
Vanadium (V) | 0.35 max |
Physical Properties Chart
Property | Value | Unit |
Density | 8.69 | g/cm³ |
Melting Point | 1350 – 1400 | °C |
Thermal Conductivity | 9.4 | W/m·K (at 20°C) |
Electrical Resistivity | 1.29 | µΩ·m (at 20°C) |
Specific Heat Capacity | 427 | J/kg·K |
Application Chart
Industry | Application |
Chemical Processing | Used in piping systems, reactors, and pressure vessels exposed to aggressive chemicals and acids. |
Oil and Gas | Employed in offshore and onshore operations, refining, and petrochemical applications. |
Pharmaceuticals | Ensures contamination-free piping systems, resistant to corrosive cleaning agents. |
Waste Treatment | Suitable for chemical waste handling systems due to its corrosion resistance. |
Marine Engineering | Used in marine environments where corrosion resistance is critical. |
Power Generation | Utilized in flue gas desulfurization systems and other high-temperature applications. |
Amardeep Steel Centre LLP is proud to offer ASTM B564 C22 Hastelloy Flanges, a product that stands out for its exceptional quality, durability, and corrosion resistance. Whether you are looking for a solution for chemical processing, oil and gas, or any other industry requiring robust and reliable flanges, Hastelloy Flanges ASTM B564 C22 provide the performance you need.
By choosing C22 Hastelloy Flanges, you are investing in a product that offers long-term reliability, safety, and cost-effectiveness. Trust Amardeep Steel Centre LLP for all your flange needs, and experience the difference that quality and expertise can make in your operations.
Global Reach
Amardeep Steel Centre boasts a robust global presence, committed to delivering unparalleled service and quality to clients around the world. Our dedication to prompt delivery and exceptional customer care sets us apart in the industry. Major corporations across the USA, Europe, Asia, and other regions place their trust in our high-quality ASTM B564 Hastelloy C22 Flanges. This widespread trust underscores our reputation for reliability and excellence. By consistently meeting and exceeding the expectations of our international clientele, we continue to solidify our position as a leader in the global steel market.

Countries We Export To
UNITED STATES, EUROPE, UK, UAE, SAUDI ARABIA, OMAN, KUWAIT, JORDAN, QATAR, INDONESIA, MALAYSIA, BRAZIL, SPAIN, ITALY, FRANCE, GERMANY, BAHRAIN, SRI LANKA, AZERBAIJAN, AUSTRALIA, AUSTRIA, PHILIPPINES, TURKEY, RUSSIA, IRAN, IRAQ, CANADA, KOREA, JAPAN, YEMEN, FINLAND, ZIMBABWE, HUNGARY, PORTUGAL, VIETNAM, MOROCCO, THAILAND, SOUTH AFRICA, MEXICO, SINGAPORE, GREECE, KUWAIT, POLAND, NEW ZEALAND, SWEDEN, SWITZERLAND, BELGIUM, BHUTAN, BANGLADESH, TAIWAN, ROMANIA, CAMBODIA, KAZAKHSTAN, AFGHANISTAN.