Nickel 201 Flanges

whate is a nickel 201 flange?

Nickel 201 flanges are a type of flange made from Nickel 201, which is a commercially pure nickel alloy with low carbon content. These flanges are commonly used in chemical processing, aerospace, and marine applications where resistance to corrosion and high temperatures is critical.

Nickel 201 flanges come in a variety of shapes and sizes and can be welded or threaded onto pipes, valves, and fittings. They are known for their excellent mechanical properties, including high tensile strength, good ductility, and low thermal expansion.

Nickel 201 flanges are typically used in harsh environments where resistance to corrosion is important, such as in the production of acids, alkalis, and salts. They are also used in marine applications where they resist seawater and other corrosive agents.

Composition of Nickel 201

Nickel 201 is a commercially pure nickel alloy with a composition that meets or exceeds the requirements specified in the ASTM B160 standard. The following is the typical composition of Nickel 201:

Nickel (Ni): 99.0% minimum

Carbon (C): 0.02% maximum

Iron (Fe): 0.40% maximum

Manganese (Mn): 0.35% maximum

Silicon (Si): 0.35% maximum

Copper (Cu): 0.25% maximum

Specifications for Nickel 201 flanges

Nickel 201 flanges come in various types, sizes, and specifications to suit different applications. Here are some common specifications for Nickel 201 flanges:

Standards: ASTM B160, ASME SB160

Size Range: 1/2" (15 NB) to 48" (1200NB)

Pressure Class: 150, 300, 600, 900, 1500, 2500

Flange Face Type: Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ)

Flange Type: Weld Neck, Slip-On, Blind, Socket Weld, Lap Joint, Threaded

Material: Nickel 201 (UNS N02201)

Dimension Standard: ANSI/ASME B16.5, B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings

Test Certificates: Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports, NABL Approved Lab Reports

Manufacture of Nickel 201 flanges

Nickel 201 flanges are typically manufactured using a forging process, which involves shaping the material by applying force with a hammer or press. The following are the typical steps involved in the manufacture of Nickel 201 flanges:

Raw Material Preparation: The first step in manufacturing Nickel 201 flanges is to procure high-quality Nickel 201 alloy raw material. The raw material is then inspected to ensure it meets the required specifications.

Heating: The raw material is heated to a suitable temperature in a furnace to make it malleable for forging.

Forging: The heated material is then forged into the desired shape using a hammer or press. The forging process helps to improve the material's strength and resistance to fatigue.

Machining: Once the forging process is complete, the flange is then machined to the final shape and dimensions using various cutting tools and machines. The machining process helps to ensure the flange meets the required tolerances and surface finish.

Inspection and Testing: The finished flange is then inspected to ensure it meets the required specifications, including dimensional accuracy, surface finish, and mechanical properties. The flange may undergo non-destructive testing, such as ultrasonic or radiographic testing, to ensure its integrity.

Surface Treatment: Depending on the application and the customer's requirements, the flange may undergo surface treatment processes such as pickling, passivation, or electroplating to improve its corrosion resistance and surface finish.

Packaging and Shipment: The final step involves packaging the flange and shipping it to the customer, ready for installation in the intended application.

Nickel 201 VS Nickel 200

The main difference between Nickel 201 and Nickel 200 is their carbon content. Nickel 200 has a maximum carbon content of 0.15%, while Nickel 201 has a maximum carbon content of 0.02%. This lower carbon content in Nickel 201 makes it more resistant to embrittlement, especially in high-temperature applications, making it a better choice for some applications.