Alloy 20 Pipe Fittings & Flanges

Alloy 20, also known as Carpenter 20, UNS N08020, or WNR 2.4660, is a highly versatile austenitic stainless steel developed to resist sulfuric acid and other aggressive chemical environments. With an excellent balance of nickel, iron, chromium, molybdenum, and copper, Alloy 20 offers superior resistance to corrosion, stress-corrosion cracking, and pitting compared to conventional stainless steels. Because of these unique properties, Alloy 20 pipe fittings and flanges have become an ideal choice for industries where chemical resistance and long-term durability are critical.

This page provides complete information about Alloy 20 pipe fittings and flanges, their features, available types, standards, and industrial applications.

Features of Alloy 20 Pipe Fittings & Flanges

• ♦  Corrosion Resistance: The alloy is specifically designed to resist sulfuric acid, phosphoric acid, nitric acid, and chloride-induced corrosion.

• ♦  Stress-Corrosion Cracking Resistance: Alloy 20 performs exceptionally well in chloride-bearing environments where standard stainless steels may fail.

• ♦  High Strength & Toughness: Retains mechanical properties in both high-temperature and cryogenic conditions.

• ♦  Ease of Fabrication: The material can be welded, machined, and fabricated with ease compared to many nickel-based alloys.

• ♦  Durability: Delivers long service life with minimal maintenance in aggressive environments.

Types of Alloy 20 Pipe Fittings

We offer a complete range of buttweld and forged Alloy 20 fittings that comply with international standards such as ASTM, ASME, and MSS. These fittings are available in different shapes, dimensions, and pressure classes.

• ♦  Alloy 20 Elbows (45°, 90°, 180°): Used to change the direction of flow in a pipeline.

• ♦  Tees (Equal & Reducing): Allow branching of the pipe system.

• ♦  Reducers (Concentric & Eccentric): Enable connection of pipes of different diameters.

• ♦  Caps & Stub Ends: Ideal for pipe sealing and joining with flanges.

• ♦  Forged Fittings (Couplings, Unions, Nipples, Crosses): Designed for high-pressure applications in smaller diameter piping systems.

Types of Alloy 20 Flanges

Alloy 20 flanges are available in multiple configurations to suit low-pressure and high-pressure piping requirements. Each type serves a unique function in connecting, sealing, or isolating sections of a pipeline.

• ♦  Weld Neck Flanges: Provide strong connections for high-pressure, high-temperature systems.

• ♦  Slip-On Flanges: Easy to install and widely used for low-pressure applications.

• ♦  Blind Flanges: Used to close pipeline ends or isolate a section of a system.

• ♦  Socket Weld Flanges: Suitable for small-diameter, high-pressure pipelines.

• ♦  Threaded Flanges: Ideal for non-welded piping connections.

• ♦  Lap Joint Flanges: Useful for systems requiring frequent disassembly.

• ♦  Ring Type Joint (RTJ) Flanges: Designed for leak-proof sealing in high-pressure conditions.

Applications of Alloy 20 Pipe Fittings & Flanges

Due to their chemical composition and superior corrosion resistance, Alloy 20 fittings and flanges are widely used in various industries, including:

• ♦  Chemical & Petrochemical Plants: Handling sulfuric acid, phosphoric acid, and other harsh chemicals.

• ♦  Pharmaceutical Industry: Ensuring contamination-free and corrosion-resistant processing.

• ♦  Food & Beverage Processing: Used in equipment exposed to acidic or corrosive cleaning agents.

• ♦  Marine & Offshore Applications: Excellent performance in seawater and saline environments.

• ♦  Pulp & Paper Industry: Withstands chemical bleaching and processing environments.

• ♦  Power Generation: Suitable for high-temperature, high-pressure piping systems.

Standards & Specifications

Alloy 20 pipe fittings and flanges are manufactured in compliance with globally recognized standards.

• ♦  Material Grades: Alloy 20 / Carpenter 20 / UNS N08020 / WNR 2.4660

• ♦  Standards: ASTM B366, ASTM B462, ASME B16.5, ASME B16.9, ASME B16.11, MSS SP-43

• ♦  Size Range: ½” to 48” (custom sizes available on request)

• ♦  Pressure Ratings: Class 150, 300, 600, 900, 1500, 2500

• ♦  Forms Available: Seamless, welded, fabricated fittings and forged flanges

Why Choose Us for Alloy 20 Pipe Fittings & Flanges?

• ♦  Quality Assurance: All products undergo strict testing, including hydro testing, ultrasonic testing, and PMI (Positive Material Identification).

• ♦  Wide Inventory: We maintain ready stock of Alloy 20 fittings and flanges in multiple sizes and dimensions for immediate dispatch.

• ♦  Customization: Tailor-made solutions available as per project drawings and client requirements.

• ♦  Global Standards Compliance: Manufactured in accordance with ASTM, ASME, ANSI, DIN, and other international norms.

• ♦  Competitive Pricing: High-quality products at the best industry prices.

• ♦  Timely Delivery: Global supply network ensuring on-time delivery for projects worldwide.

Conclusion

Alloy 20 pipe fittings and flanges offer unmatched corrosion resistance, high strength, and durability, making them the preferred choice for industries handling harsh chemicals and high-pressure environments. Whether used in chemical processing plants, food-grade applications, or offshore projects, Alloy 20 ensures reliability and longevity of piping systems.

By choosing the right manufacturer and supplier, you can ensure consistent quality, compliance with international standards, and cost-effective solutions for your projects.

If you are looking for premium-quality Alloy 20 fittings and flanges, we provide a wide range of products that meet your exact specifications.