ASTM B622 Grade C22 Hastelloy Plates: The Ultimate Corrosion-Resistant Alloy
At ASC LLP, we specialize in providing top-tier materials that meet the rigorous demands of various industries. One of our most prominent offerings is the ASTM B622 Grade C22 Plates. These plates are renowned for their exceptional resistance to corrosion, making them a vital material in many challenging environments.
Whether you’re in the chemical processing, petrochemical, or marine industry, ASTM B622 Grade C22 Hastelloy Plates offers unmatched reliability and durability. In this comprehensive guide, we’ll delve into the properties, advantages, and applications of these plates, along with why ASC LLP is your go-to source for this high-performance material.
What Are ASTM B622 Grade C22 Hastelloy Plates?
ASTM B622 Grade C22 Hastelloy Plates are made from Hastelloy C22, a nickel-chromium-molybdenum alloy with added tungsten. This specific combination of elements gives Hastelloy C22 its outstanding resistance to a wide range of corrosive environments. The ASTM B622 specification covers seamless pipes and tubes made from nickel and nickel-cobalt alloys, but its Grade C22 variant is particularly well-suited for plate manufacturing due to its superior mechanical properties.
The Hastelloy C22 alloy is known for its ability to withstand both oxidizing and reducing environments, making it an excellent choice for industries where materials are exposed to harsh chemicals and extreme conditions.

ASTM B622 Grade C22 Hastelloy Plates Properties
The properties of ASTM B622 Grade C22 Hastelloy Plates make them a standout choice for numerous applications. Here’s a closer look at the key properties that set these plates apart:
- Corrosion Resistance: The most notable property of Hastelloy C22 is its exceptional resistance to corrosion. It can resist pitting, crevice corrosion, and stress corrosion cracking, which are common issues in corrosive environments. This makes it ideal for use in chemical processing and marine industries where exposure to harsh chemicals and saltwater is common.
- Temperature Stability: These plates maintain their integrity even in extreme temperatures, both high and low. This stability ensures that the material can perform well in applications ranging from cryogenic temperatures to those exceeding 1000°F (540°C).
- Weldability: ASTM B622 Grade C22 Hastelloy Plates are known for their excellent weldability. This property is crucial for industries that require precise fabrication and assembly. The material can be welded using various techniques without compromising its corrosion resistance or mechanical strength.
- Mechanical Strength: The alloy exhibits high tensile strength and toughness, which ensures that the plates can withstand high-pressure environments without deforming or breaking.
Advantages of ASTM B622 Grade C22 Hastelloy Plates
When selecting materials for demanding applications, it’s essential to consider the advantages that a specific alloy offers. ASTM B622 Grade C22 Hastelloy Plates provide numerous benefits that make them a preferred choice:
- Long-Term Durability: The robust nature of Hastelloy C22 means that these plates offer long-term performance, reducing the need for frequent replacements. This durability translates to cost savings over time.
- Versatile Application: Thanks to their unique combination of properties, ASTM B622 Gr C22 Hastelloy Plates can be used in various industries, from chemical processing and pharmaceuticals to power generation and wastewater treatment.
- Reduced Maintenance Costs: The corrosion-resistant nature of these plates minimizes the risk of material degradation, leading to lower maintenance costs and less downtime.
- Enhanced Safety: Using materials that resist corrosion and maintain their strength under extreme conditions enhances the safety of operations, particularly in industries where material failure could lead to catastrophic consequences.


Schedule and Size Chart
Plate Thickness (mm) | Width (mm) | Length (mm) | Schedule |
1.5 – 3.0 | 1000 – 1500 | 3000 – 6000 | 10 – 40 |
3.1 – 6.0 | 1000 – 2000 | 3000 – 8000 | 20 – 60 |
6.1 – 12.0 | 1000 – 2000 | 3000 – 8000 | 40 – 80 |
12.1 – 25.0 | 1000 – 2500 | 3000 – 12000 | 60 – 160 |
25.1 – 50.0 | 1500 – 2500 | 6000 – 12000 | 80 – 160 |
50.1 – 100.0 | 2000 – 2500 | 6000 – 12000 | 100 – 160 |
Mechanical Properties Chart
Property | Value |
Tensile Strength, min | 690 MPa (100 ksi) |
Yield Strength (0.2% offset) | 310 MPa (45 ksi) |
Elongation, min | 40% |
Hardness (Rockwell B) | ≤95 |
Modulus of Elasticity | 205 GPa (29.7 x 10⁶ psi) |
Poisson’s Ratio | 0.31 |
Specifications Chart
Standard | Specification |
ASTM | B622 |
ASME | SB622 |
UNS | N06022 |
Other | 2.4602 |
Tensile Strength Chart
Property | Value |
Tensile Strength | ≥ 690 MPa (100 ksi) |
Yield Strength | ≥ 310 MPa (45 ksi) |
Elongation at Break | ≥ 40% |
Heat Treatment Requirement Chart
Process | Temperature (°C) | Cooling Method |
Solution Annealing | 1120 – 1170 | Rapid air cooling or water quenching |
Stress Relieving | 870 – 900 | Air cooling |
Cold Forming | Followed by solution annealing to restore mechanical properties |
Chemical Composition Chart
Element | Composition (%) |
Nickel (Ni) | 56.0 – 65.0 |
Chromium (Cr) | 20.0 – 22.5 |
Molybdenum (Mo) | 12.5 – 14.5 |
Iron (Fe) | 2.0 – 6.0 |
Tungsten (W) | 2.5 – 3.5 |
Cobalt (Co) | ≤ 2.5 |
Manganese (Mn) | ≤ 0.5 |
Silicon (Si) | ≤ 0.08 |
Carbon (C) | ≤ 0.01 |
Phosphorus (P) | ≤ 0.02 |
Sulfur (S) | ≤ 0.02 |
Physical Properties Chart
Property | Value |
Density | 8.69 g/cm³ (0.314 lb/in³) |
Melting Point | 1357°C – 1430°C (2475°F – 2606°F) |
Electrical Resistivity | 1.29 μΩ·m |
Thermal Conductivity | 10.0 W/m·K |
Specific Heat Capacity | 427 J/kg·K |
Coefficient of Thermal Expansion | 11.0 µm/m·K |
Application Chart
Industry | Application |
Chemical Processing | Reactors, Heat Exchangers, Vessels, Piping Systems |
Marine | Offshore Platforms, Shipbuilding, Subsea Equipment |
Pharmaceuticals | Manufacturing Equipment, Storage Vessels |
Power Generation | Flue Gas Desulfurization, Turbine Components |
Pollution Control | Stack Liners, Scrubbers, Ducts, Dampers |
Wastewater Treatment | Chemical Tanks, Piping, and Equipment |
Aerospace | Engine Components, Exhaust Systems |
Benefits in Choosing Us As Your ASTM B622 Grade C22 Plates, Sheets Supplier
As a leading ASTM B622 Grade C22 Hastelloy Plates manufacturer, exporter, and supplier, ASC LLP is committed to providing materials that meet the highest industry standards. Here’s why we are your best choice:
- Quality Assurance: Our ASTM B622 Grade C22 Hastelloy Plates are manufactured to the strictest quality standards, ensuring that you receive products that perform exceptionally well in demanding applications.
- Comprehensive Stock: We maintain a vast inventory of ASTM B622 Grade C22 Hastelloy Plates, allowing us to fulfill orders promptly, regardless of the size or specifications.
- Global Export Network: With a well-established network of traders and stockists, we can deliver our plates to customers worldwide, ensuring that you receive your materials on time and in perfect condition.
- Expert Support: Our team of experts is always available to provide guidance and support, helping you choose the right materials for your specific needs.
In the world of high-performance materials, ASTM B622 Gr C22 Hastelloy Sheets stand out as a top choice for industries that demand superior corrosion resistance, mechanical strength, and durability. At ASC LLP, we pride ourselves on being a leading manufacturer, exporter, and supplier of these plates, providing our customers with the materials they need to succeed in their respective industries.
Whether you’re looking to enhance the longevity of your equipment, reduce maintenance costs, or ensure the safety of your operations, ASTM B622 Grade C22 Hastelloy Plates from ASC LLP are the ideal solution. Contact us today to learn more about how our products can meet your specific requirements.
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 B622 Grade C22 Plates. 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.