Hastelloy C-2000 Flanges

What are Hastelloy 2000 Flanges?

Hastelloy C-2000 Flanges are high-performance piping components used to:

• Connect piping systems: These flanges securely join pipes, valves, and equipment, ensuring a strong and reliable connection.
• Handle aggressive chemical environments: Designed for use in industries dealing with strong acids and corrosive chemicals.
• Ensure leak-proof sealing: Used with gaskets and bolts to prevent leakage under pressure.
• Allow easy maintenance: Enable quick dismantling for inspection, cleaning, or replacement.

These flanges are made from a nickel-chromium-molybdenum alloy with added copper, providing excellent resistance to both oxidizing and reducing environments.

Composition Highlights (Typical)

Hastelloy 2000:

• Nickel (Ni): Balance → Provides overall corrosion resistance and toughness
• Chromium (Cr): ~23% → Enhances resistance to oxidizing environments
• Molybdenum (Mo): ~16% → Improves resistance to pitting and crevice corrosion
• Copper (Cu): ~1.6% → Provides excellent resistance to sulfuric acid
• Iron (Fe): ≤ 3% → Adds structural strength
• Carbon (C): ≤ 0.01% → Minimizes carbide formation

Key Advantage: Combination of chromium, molybdenum, and copper provides unmatched resistance to mixed acid environments.

Key Features of Hastelloy 2000 Flanges

• Exceptional corrosion resistance: Performs in highly aggressive and mixed chemical environments
• Excellent resistance to sulfuric acid: One of the best alloys for sulfuric acid applications
• Outstanding resistance to pitting and crevice corrosion: Prevents localized damage
• High resistance to oxidizing and reducing environments: Versatile for multiple chemical processes
• Superior mechanical strength and durability: Suitable for heavy-duty industrial use
• Good weldability and fabrication properties: Easy to process and install
• Long service life: Reduces maintenance and replacement costs

Mechanical Properties

• Tensile Strength (~700 MPa): Indicates the material’s ability to withstand high stress before failure
• Yield Strength (≥ 300 MPa): Shows resistance to permanent deformation
• Elongation (≥ 40%): Reflects flexibility and ductility

These properties ensure reliability in demanding industrial applications.

Physical Properties

• Density (~8.5 g/cm³): Provides strength with manageable weight
• Melting Range (1300 – 1350°C): Suitable for high-temperature environments
• Modulus of Elasticity (~205 GPa): Indicates stiffness and resistance to deformation
• Thermal Conductivity (~10 W/m•K): Low heat transfer capability
• Coefficient of Expansion (~12 µm/m°C): Handles temperature fluctuations effectively

Corrosion Resistance

Hastelloy C-2000 Flanges offer excellent resistance to:

• Sulfuric acid (all concentrations): Ideal for acid processing industries
• Hydrochloric and nitric acids
• Mixed acid environments: One of the few alloys designed for such conditions
• Chloride-induced corrosion: Prevents pitting and crevice corrosion
• Oxidizing and reducing environments

This makes Hastelloy 2000 one of the most versatile corrosion-resistant alloys available.

Heat Treatment

• Solution Annealing (1060 – 1150°C): Restores corrosion resistance and ductility
• Rapid Cooling: Prevents unwanted phase formation

This process ensures optimal mechanical and corrosion-resistant properties.

Weldability

Hastelloy C-2000 Flanges can be welded using:

• TIG (GTAW) → Provides precise and clean welds
• MIG (GMAW) → Suitable for faster production
• SMAW → Common for industrial applications

Best Practices:

• Use matching filler materials
• Maintain low heat input
• Ensure clean welding conditions

Machinability

• Moderate machinability: Requires proper cutting techniques
• Use carbide tools: Improves machining efficiency
• Low cutting speeds: Prevents overheating
• Use coolant: Enhances tool life and surface finish
• Avoid work hardening: Maintains material integrity

Standards & Specifications

• ASTM B564: Standard for Hastelloy forged flanges
• ASME SB564: Equivalent ASME specification
• ANSI B16.5 / B16.47: Dimensions and pressure ratings
• ASTM B575: Material specification

These standards ensure global acceptance and quality consistency.

Available Types of Hastelloy Flanges

• Weld Neck Flanges: Used in high-pressure and high-temperature systems
• Slip-On Flanges: Easy to install and economical
• Blind Flanges: Used to seal pipe ends
• Socket Weld Flanges: Ideal for small-diameter pipelines
• Threaded Flanges: Used where welding is not possible
• Lap Joint Flanges: Suitable for systems requiring frequent dismantling
• Orifice Flanges: Used for flow measurement

Sizes & Specifications

• Size Range (½” to 48”): Covers small to large piping systems
• Pressure Ratings (150# to 2500#): Suitable for various pressure conditions
• Forged construction: Ensures high strength and reliability

Surface Finish:

• Pickled → Clean and corrosion-resistant
• Polished → Smooth finish
• Machined → Precision engineered

(Custom sizes available as per requirement)

Applications of Hastelloy 2000 Flanges

• Chemical Processing Industry: Used in acid handling systems and chemical reactors.
• Petrochemical Industry: Handles aggressive chemical environments.
• Pharmaceutical Industry: Ensures clean and corrosion-resistant piping.
• Power Generation: Used in flue gas desulfurization systems.
• Marine Industry: Suitable for corrosive and salt-rich environments

Quality Testing & Inspection

All flanges undergo strict quality checks:

• Chemical analysis: Confirms alloy composition
• Mechanical testing: Ensures strength and durability
• Dimensional inspection: Verifies accuracy
• Surface examination: Detects defects
• PMI testing: Confirms material identity

Mill Test Certificates (MTC) and third-party inspection reports are provided.

Packaging & Delivery

• Export-quality wooden packaging
• Protective wrapping to prevent damage
• Proper labeling for traceability
• Safe and timely global shipping

Why Choose Virami Steel Hub?

• Trusted Hastelloy flange manufacturer in Mumbai
• Large inventory availability
• Competitive pricing
• Custom manufacturing solutions
• Compliance with international standards
• Strong global export network
• Dedicated customer support

Conclusion

Hastelloy C-2000 Flanges are a premium solution for industries requiring exceptional resistance to mixed acids and highly corrosive environments. Their superior chemical resistance, strength, and durability make them ideal for chemical processing, petrochemical, and power generation industries.

Virami Steel Hub delivers high-quality Hastelloy C-2000 Flanges that meet global standards, ensuring long-term reliability, safety, and performance.