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Alloy 20 Pipe Fittings – Manufacturer, Supplier & Exporter in Mumbai, India

Alloy 20 Pipe Fittings – Manufacturer, Supplier & Exporter in Mumbai, India

Virami Steel Hub is a trusted manufacturer, supplier, stockist, and exporter of premium-quality Alloy 20 Pipe Fittings in Mumbai, India. We specialize in providing high-performance pipe fittings designed to offer exceptional resistance to corrosion, especially in acidic and chemical environments.

Our Alloy 20 pipe fittings are widely used in industries where reliability, durability, and resistance to aggressive chemicals are critical. These fittings are engineered to perform efficiently in sulfuric acid applications and other corrosive conditions.

Manufactured using advanced production techniques and high-grade materials, our products ensure excellent dimensional accuracy, superior strength, and long-lasting performance.

With a strong supply chain and global distribution network, we cater to clients across India and export to regions including the USA, Europe, the Middle East, Africa, and Southeast Asia.

What are Alloy 20 Pipe Fittings?

Alloy 20 Pipe Fittings, also known as Carpenter 20 or UNS N08020, are nickel-iron-chromium-based alloy fittings specifically designed for superior corrosion resistance in harsh chemical environments.

These fittings are particularly effective in resisting:

  • Sulfuric acid corrosion
  • Chloride-induced stress corrosion cracking
  • Pitting and crevice corrosion

The alloy contains nickel, chromium, and molybdenum, which enhance corrosion resistance, while copper improves performance in sulfuric acid environments.

Alloy 20 pipe fittings are widely used for connecting pipes in systems that handle aggressive chemicals and high-pressure applications.


Key Features of Alloy 20 Pipe Fittings

  • Excellent resistance to sulfuric acid and chemical corrosion
  • Strong resistance to pitting and crevice corrosion
  • High durability in harsh environments
  • Good mechanical strength and stability
  • Resistance to stress corrosion cracking
  • Excellent fabrication and weldability
  • Long service life in chemical processing systems

These features make Alloy 20 fittings ideal for demanding industrial applications.


Chemical Composition (%)

Typical composition includes:

  • Nickel (Ni): 32 – 38%
  • Chromium (Cr): 19 – 21%
  • Iron (Fe): Balance
  • Molybdenum (Mo): 2 – 3%
  • Copper (Cu): 3 – 4%
  • Carbon (C): ≤ 0.07%
  • Manganese (Mn): ≤ 2%
  • Silicon (Si): ≤ 1%
  • Niobium (Nb): 8 × C min, 1% max

Role of Alloying Elements

  • Nickel: Enhances corrosion resistance and toughness
  • Chromium: Improves oxidation resistance
  • Molybdenum: Increases resistance to pitting and crevice corrosion
  • Copper: Provides excellent resistance to sulfuric acid
  • Niobium: Stabilizes the alloy and prevents carbide precipitation

Mechanical Properties

  • Tensile Strength: 550 – 750 MPa
  • Yield Strength: ≥ 240 MPa
  • Elongation: ~30%
  • Hardness: Up to 200 HB
  • Density: 8.08 g/cm³

These properties ensure strength, durability, and reliability under pressure and corrosive conditions.

Physical Properties

  • Melting Range: 1357 – 1430°C
  • Modulus of Elasticity: 195 GPa
  • Thermal Conductivity: 11.2 W/m·K
  • Electrical Resistivity: 1.2 µΩ·m
  • Thermal Expansion: 15.2 µm/m°C

Corrosion Resistance

Alloy 20 pipe fittings provide excellent resistance to:

  • Sulfuric acid environments
  • Chloride stress corrosion cracking
  • Pitting and crevice corrosion
  • Phosphoric and nitric acids
  • Industrial chemical processing conditions

This makes them highly suitable for chemical and process industries.


Heat Treatment

Alloy 20 fittings are typically solution annealed to enhance corrosion resistance.

Solution Annealing:

  • Temperature: 925 – 1010°C
  • Rapid cooling (water quenching)

This process ensures optimal mechanical and corrosion-resistant properties.


Weldability

Alloy 20 pipe fittings offer good weldability and are compatible with:

  • TIG (GTAW)
  • MIG (GMAW)
  • SMAW

Welding Recommendations

  • Clean surfaces before welding
  • Use low heat input
  • Select appropriate filler material
  • Avoid contamination

Machinability

Alloy 20 has moderate machinability and requires:

  • Sharp carbide tools
  • Controlled cutting speeds
  • Adequate lubrication
  • Avoidance of excessive heat

Standards & Specifications

  • ASTM B366
  • ASME SB366
  • UNS N08020
  • MSS SP-43 / SP-75

Available Types

  • Elbows (90°, 45°)
  • Tees (Equal & Reducing)
  • Reducers (Concentric & Eccentric)
  • Stub Ends
  • Caps
  • Cross Fittings

Available Sizes & Finishes

  • Size Range: ½” to 48”
  • Thickness: SCH 10 to SCH XXS

Surface Finish:

  • Pickled
  • Polished
  • Sandblasted

Custom sizes available as per requirements.


Applications

Chemical Processing Industry

  • Acid handling systems
  • Chemical reactors
  • Storage tanks

Petrochemical Industry

  • Refinery equipment
  • Processing units

Pharmaceutical Industry

  • Clean process piping

Food Processing

  • Corrosion-resistant piping systems

Power Plants

  • Heat exchangers
  • Fluid handling systems

Quality Testing & Inspection

At Virami Steel Hub, all Alloy 20 pipe fittings undergo strict quality checks:

  • Chemical composition testing
  • Mechanical testing
  • Hydrostatic testing
  • Dimensional inspection
  • PMI (Positive Material Identification)

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

Packaging & Delivery

  • Export-grade packaging
  • Wooden boxes and pallets
  • Proper labeling and traceability
  • Safe and timely delivery

Why Choose Virami Steel Hub?

  • Leading Alloy 20 pipe fittings manufacturer in Mumbai
  • Ready stock availability
  • Competitive pricing
  • Custom manufacturing solutions
  • Compliance with international standards
  • Global export network
  • Dedicated customer support

Conclusion

Alloy 20 Pipe Fittings are highly reliable components designed for use in corrosive environments, particularly where sulfuric acid resistance is essential. Their excellent mechanical strength, corrosion resistance, and fabrication properties make them a preferred choice across various industries.

Virami Steel Hub delivers premium-quality Alloy 20 pipe fittings that meet global standards, ensuring long-term performance, safety, and durability in demanding industrial applications.

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