ASTM B564 UNS N08020 Alloy Weld Neck Flange ASME B16.5 Alloy 20 WNRF Flange

ASTM B 564 UNS N08020 / Alloy 20 WNRF Flange Nickel Alloy Weld Neck Flange
 
 

ASTM B564 UNS N08020 Weld Neck Flange Nickel Alloy Flange

Key Features & Advantages

• Superior Strength in Harsh Environments: The combination of the robust weld neck design and the high-strength Alloy 20 forging makes it capable of withstanding high pressures and temperatures in corrosive service.

• Excellent Weldability: The "weld neck" is designed to be butt-welded directly to the pipe, creating a strong, reliable joint. Alloy 20 itself is readily weldable using compatible filler metals (e.g., ER320LR, ENi-6620).

• Long Service Life: Its exceptional resistance to a wide range of corrosives minimizes maintenance, downtime, and replacement costs.

• Smooth Flow Path: The tapered hub allows for a smooth transition from the pipe to the flange, reducing turbulence and pressure drop

Application

This flange is used in industries where standard stainless steels (304/316) fail due to corrosion.

• Chemical Processing Industry (CPI): Reactors, tanks, and piping handling sulfuric acid, phosphoric acid, and other aggressive chemicals.

• Pharmaceutical Industry: For processes involving high-purity and corrosive intermediates.

• Food and Beverage Processing: Especially in applications with acidic ingredients and chlorinated cleaning agents.

• Oil & Gas (Upstream & Midstream): Handling of sour gases (H₂S) and other corrosive wellstream components.

• Pulp & Paper Industry: Digesters and bleaching equipment.

• Plastic Manufacturing: Plants producing synthetic fibers and polymers.

PT