Kanakratna Steelage Private Limited

Hastelloy C22 Round Bars are high-performance nickel-chromium-molybdenum alloys designed to provide exceptional resistance to a wide range of oxidizing and reducing environments. Classified under UNS N06022 and standards such as ASTM B574, Hastelloy C22 is considered one of the most versatile corrosion-resistant alloys available today.

Round bars manufactured from Hastelloy C22 are widely used in industries such as chemical processing, marine engineering, pollution control, power generation, pharmaceuticals, and aerospace. The unique combination of high strength, superior corrosion resistance, and excellent fabricability makes Hastelloy C22 round bars an indispensable material in modern engineering.

This article provides an in-depth analysis of Hastelloy C22 round bars, covering everything from composition, mechanical properties, standards, fabrication, applications, suppliers, pricing, and future trends.

• Density: 8.69 g/cm³

• Melting Point: 1399 – 1427 °C

• Thermal Conductivity: 11.4 W/m·K

• Electrical Resistivity: 1.29 μΩ·m

• Magnetic Properties: Non-magnetic

• Modulus of Elasticity: ~206 GPa

• Solution Annealing (1100–1200 °C) followed by rapid quenching ensures corrosion resistance.

• NDT: Ultrasonic Testing, Eddy Current Testing.

• Destructive Tests: Tensile, impact, hardness, and bend tests.

• Corrosion Testing: ASTM G28 methods.

• Mechanical Tests: Tensile, hardness, bend tests.

• Corrosion Tests: ASTM G28 Method A & B.

• Non-Destructive Testing (NDT): Ultrasonic, radiography.

• Positive Material Identification (PMI): Confirms alloy chemistry.

• Standard lengths or custom cut-to-size.

• Packed in wooden crates or boxes.

• Ends capped to prevent contamination.

• Export-worthy seaworthy packaging with anti-rust coatings.

Additional Information:

• Item Code: C22
• Production Capacity: 20 Tons
• Delivery Time: Ready Stock
• Packaging Details: The packaging of the product is done using an effective method of packaging. It all includes- • Shrink-wrapping • Bubble wrapping • Carton boxes • Wooden crates/pallets/boxes

Hastelloy C22 Sheets (UNS N06022) are one of the most versatile and corrosion-resistant nickel-based alloys available in the market. Belonging to the family of Hastelloy alloys, C22 is specially designed to handle highly aggressive chemical environments where conventional stainless steels, duplex steels, and even some nickel alloys fail.

These sheets are manufactured from nickel-chromium-molybdenum-tungsten alloy, which provides exceptional resistance to a wide range of oxidizing and reducing chemicals. Due to its superior ability to withstand pitting, crevice corrosion, and stress corrosion cracking (SCC), Hastelloy C22 is often used in chemical processing plants, pollution control, marine applications, pharmaceuticals, flue gas scrubbers, and pulp & paper industries.

The unique alloying elements of Hastelloy C22 are responsible for its superior resistance to oxidizing and reducing conditions.

Typical Composition (% by weight):

• Nickel (Ni): Balance (~56%)

• Chromium (Cr): 20 – 22.5%

• Molybdenum (Mo): 12.5 – 14.5%

• Iron (Fe): 2 – 6%

• Tungsten (W): 2.5 – 3.5%

• Cobalt (Co): ≤ 2.5%

• Manganese (Mn): ≤ 0.5%

• Silicon (Si): ≤ 0.08%

• Carbon (C): ≤ 0.015%

• Phosphorus (P): ≤ 0.02%

• Sulfur (S): ≤ 0.02%

Hastelloy C22 combines corrosion resistance with mechanical strength and ductility.

Typical Mechanical Properties at Room Temperature:

• Tensile Strength: 690 – 760 MPa

• Yield Strength (0.2% offset): 283 – 310 MPa

• Elongation: 40 – 50%

• Hardness: 90 – 95 HRB

• Impact Toughness: Excellent, even at cryogenic temperatures

• Density: 8.69 g/cm³

• Melting Range: 1350 – 1400 °C

• Thermal Conductivity: 13 W/m·K at 100 °C

• Electrical Resistivity: 1.29 µΩ·m at 20 °C

• Elastic Modulus: 205 GPa

• Coefficient of Thermal Expansion: 12.9 µm/m·K (20 – 100 °C)

These physical properties allow C22 sheets to perform well in heat exchangers, condensers, and reactors under fluctuating thermal cycles.

Sheets undergo stringent testing:

• Chemical Analysis: Spectrometry.

• Mechanical Tests: Tensile, hardness, and impact testing.

• Corrosion Tests: ASTM G28, ASTM G48.

• Non-Destructive Testing (NDT): Ultrasonic, eddy current, radiography.

• Dimensional & Surface Inspections.

Additional Information:

• Production Capacity: 20 Tons
• Delivery Time: Ready Stock
• Packaging Details: The packaging of the product is done using an effective method of packaging. It all includes- • Shrink-wrapping • Bubble wrapping • Carton boxes • Wooden crates/pallets/boxes

Flanges are essential components in industrial piping systems, providing a secure way to connect pipes, valves, pumps, and other equipment. Among the many types of flanges, screwed flanges (also called threaded flanges) stand out due to their ease of installation and ability to connect without welding.

When manufactured from Hastelloy C22 (UNS N06022), these flanges achieve exceptional resistance to corrosion, pitting, and oxidizing agents, making them ideal for demanding chemical processing and marine environments.

Hastelloy C22 Screwed Flanges combine the advantages of threaded connections with the outstanding material properties of a nickel-chromium-molybdenum-tungsten alloy, making them indispensable in sectors like pharmaceuticals, oil & gas, pollution control, power generation, and desalination.

• Density: 8.69 g/cm³

• Melting Range: 1350–1400 °C

• Thermal Conductivity: 10.0 W/m·K

• Electrical Resistivity: 1.29 μΩ·m

• Non-magnetic

• Tensile Strength: 690 MPa

• Yield Strength (0.2% offset): 310 MPa

• Elongation: ~45%

• Hardness: ~95 HRB

• Excellent toughness even at cryogenic temperatures

Hastelloy C22 screwed flanges comply with:

• ASTM B564 – Forged nickel alloy flanges

• ASME B16.5 – Pipe flanges (up to 24”)

• ASME B16.47 – Large-diameter flanges

• ASME B16.11 – Forged screwed fittings

• Pressure Ratings – Class 150, 300, 600, 900, 1500, 2500

• UNS N06022 – Designation for Hastelloy C22

• Hydrostatic testing

• Ultrasonic & radiographic inspection

• Hardness testing

• Tensile & yield strength testing

• Corrosion resistance tests (ASTM G28)

• Dimensional & thread gauge checks

Additional Information:

• Production Capacity: IN TONS
• Delivery Time: READY STOCK
• Packaging Details: The packaging of the product is done using an effective method of packaging. It all includes- • Shrink-wrapping • Bubble wrapping • Carton boxes • Wooden crates/pallets/boxes

In highly corrosive and demanding industries such as chemical processing, pharmaceuticals, power generation, marine engineering, and pollution control, the choice of flange material is critical. Hastelloy C22 Socket Weld Flanges have emerged as one of the most reliable and durable solutions due to their exceptional resistance to oxidizing and reducing agents, superior pitting and crevice corrosion resistance, and outstanding mechanical properties.

Hastelloy C22 (UNS N06022, WNR 2.4602) is a nickel-chromium-molybdenum alloy with tungsten additions, designed to resist the most aggressive chemical environments. When fabricated into socket weld flanges, this alloy provides a secure, high-strength, and corrosion-resistant method of connecting pipes and equipment, especially in smaller pipe sizes and high-pressure systems.

Socket weld flanges are preferred where space constraints, leak-tight connections, and durability are essential. By welding the pipe into the socket end, they ensure smooth flow, minimal turbulence, and strong fatigue resistance.

• Mechanical Tests: Tensile, hardness, impact.

• Corrosion Tests: ASTM G48 (pitting), Huey test.

• Non-Destructive Tests (NDT): Ultrasonic, radiography, dye penetrant.

• Positive Material Identification (PMI): Confirms alloy grade.

• Hydrostatic Testing: Ensures leak-proof operation.

• Dimensional Inspections: As per ASME B16.5 tolerances.

Additional Information:

• Production Capacity: IN TONS
• Delivery Time: READY STOCK
• Packaging Details: The packaging of the product is done using an effective method of packaging. It all includes- • Shrink-wrapping • Bubble wrapping • Carton boxes • Wooden crates/pallets/boxes

Industrial pipelines form the backbone of sectors such as chemical processing, oil & gas, pharmaceuticals, pollution control, power generation, and marine engineering. In these systems, pipe fittings (elbows, tees, reducers, crosses, couplings, flanges, etc.) ensure proper flow direction, distribution, and connection integrity.

However, in corrosive environments involving chlorides, oxidizers, reducing agents, or extreme temperatures, standard stainless steels (like 316L) and even duplex alloys often fail due to pitting, crevice corrosion, and stress corrosion cracking. This is where nickel-based alloys like Hastelloy C22 become essential.

Hastelloy C22 Pipe Fittings (UNS N06022 / W.Nr. 2.4602) are renowned for their exceptional resistance to oxidizing and reducing agents, making them among the most versatile and durable fittings available. They are particularly used in chemical reactors, scrubbers, pharmaceutical pipelines, heat exchangers, and marine systems where failure is not an option.

• Chemical Analysis (Spectro, OES)

• Mechanical Tests (Tensile, Hardness, Impact)

• Corrosion Testing (ASTM G28, ASTM G48)

• Positive Material Identification (PMI)

• Non-Destructive Testing (NDT) → Radiography, ultrasonic, dye penetrant.

• Hydrostatic Pressure Test → For pressure-rated fittings.

Additional Information:

• Production Capacity: IN TONS
• Delivery Time: READY STOCK
• Packaging Details: The packaging of the product is done using an effective method of packaging. It all includes- • Shrink-wrapping • Bubble wrapping • Carton boxes • Wooden crates/pallets/boxes

Flanges are critical components in piping systems, serving as connectors, seals, and reinforcements between pipes, valves, pumps, and other equipment. Among various types of flanges, Lap Joint Flanges (LJFs) are uniquely designed to allow rotation around the pipe or stub end, providing excellent flexibility in alignment, assembly, and disassembly.

When manufactured from Hastelloy C22 (UNS N06022), Lap Joint Flanges offer exceptional corrosion resistance, superior mechanical strength, and long service life in harsh environments. These flanges are especially favored in chemical processing, marine engineering, oil & gas, pharmaceuticals, pollution control, and power generation.

Hastelloy C22 Lap Joint Flanges combine the flexibility of LJF design with the outstanding performance of C22 alloy, making them an indispensable choice for critical piping systems.

• Chemical Analysis (spectro/OES).

• Mechanical Testing (tensile, yield, elongation, hardness).

• NDT – ultrasonic, radiography, dye penetrant.

• Hydrostatic Testing – pressure containment.

• PMI (Positive Material Identification).

• Dimension Inspection as per ASME B16.5/B16.47.

Additional Information:

• Production Capacity: IN TONS
• Delivery Time: READY STOCK
• Packaging Details: The packaging of the product is done using an effective method of packaging. It all includes- • Shrink-wrapping • Bubble wrapping • Carton boxes • Wooden crates/pallets/boxes