MSS SP 83 B564 UNS N10276 Pipe Unions

MSS SP 83 B564 UNS N10276 Pipe Unions refers to pipe unions used for pipe connections that comply with MSS SP-83 and ASTM B564 standards. These pipe unions are commonly used in industries such as chemicals, oil and gas, and other sectors where high-corrosion and high-temperature resistance are required, primarily made from UNS N10276 material (Hastelloy C-276).

High Quality MSS SP 83 B564 UNS N10276 Pipe Unions

  • Pressure Rating: Class 3000  (~750 psi) and 6000  (~1500 psi)
  • Size Range: typically NPS 1/8″ to 4″
  • Types: Socket weld (SW), Threaded (NPT)
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Key Features

  • Excellent Corrosion Resistance: Due to the use of Hastelloy C-276, it offers excellent resistance to corrosion, especially in chemical and acidic environments.
  • High-Temperature Resistance: Capable of withstanding high temperatures with excellent thermal stability.
  • Good Mechanical Properties: Durable under extreme mechanical loads.
  • Weldability: Suitable for welding applications, ensuring system integrity and strength.

Material Specifications (UNS N10276)

UNS N10276 (Hastelloy C-276): This alloy is known for its outstanding corrosion resistance, especially in applications involving strong acids and chlorides.

Chemical composition: Major components include nickel, chromium, molybdenum, iron, tungsten, and others.

  • Nickel: 56-58%
  • Chromium: 14.5-16.5%
  • Molybdenum: 15-17%
  • Iron: 2.5%
  • Other elements: Tungsten, Titanium, etc.

Structure & Types

Three-Piece Design:

  • Consists of two threaded or socket weld ends (male/female) and a central nut for quick assembly/disassembly.
  • Sealing: Metal-to-metal contact (no gasket), relying on precision machining for leak-proof performance.

Connection Types:

  • Threaded Unions: Use NPT threads for pipe connections.
  • Socket Weld Unions: Welded to pipes for higher-pressure applications.

Pressure Ratings:

  • Class 3000 (~750 psi) and Class 6000 (~1500 psi). Pressure-temperature ratings are defined in standard tables.

Typical Applications

  • Chemical Industry: Used for reactors, heat exchangers, and pipe connections.
  • Oil & Gas Industry: Used for transporting corrosive liquids and gases.
  • Marine Engineering: Suitable for seawater treatment and shipboard applications.
  • Power Industry: Used in thermal power equipment and high-temperature steam pipelines.
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One-Stop MSS SP 83 B564 UNS N10276 Pipe Unions Provider for All Your Needs

SSM has significant product advantages in manufacturing MSS SP 83 B564 UNS N10276 Pipe Unions. Whether it’s quality or price, we will meet your needs.

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More Information about MSS SP 83 B564 UNS N10276 Pipe Unions

MSS SP-83 Standard

Specifies the design, dimensions, and testing requirements for socket weld (SW) and threaded (NPT) unions, suitable for small-bore high-pressure piping (NPS 1/8″ to 4″).

Pressure ratings: Class 3000 (~750 psi) and Class 6000 (~1500 psi).

ASTM B564

Material standard for nickel alloy forgings, covering the chemical composition, mechanical properties, and manufacturing requirements of UNS N10276 (Hastelloy C276).

Selection Guidelines

When selecting, consider factors such as operating temperature, operating pressure, media characteristics, and environmental conditions.

For highly corrosive and high-temperature environments, UNS N10276 alloy material should be prioritized.

Ensure the union size matches the pipe to avoid instability or improper connections.

Comparison with Other Materials

  • Hastelloy C-276 (UNS N10276) offers superior corrosion resistance compared to stainless steel, particularly in chemical corrosion environments.
  • Compared to Monel alloys, Hastelloy C-276 excels in resisting chloride corrosion.
  • Inconel alloys, although excellent for high-temperature strength, do not provide the same level of corrosion resistance as Hastelloy C-276.

FAQ

They are primarily used in the chemical, oil and gas, marine engineering, and power industries, especially in environments with strong acids and chlorides.

 

Because UNS N10276 offers superior corrosion resistance, especially in aggressive chemical environments.

The operating temperature range for Hastelloy C-276 is typically between -196°C to 1040°C, depending on the specific application and environment.

Hastelloy C-276 material itself is highly corrosion-resistant and generally does not require frequent maintenance. However, periodic checks for seal integrity and wear on the connecting parts are recommended.

MSS SP-83 B564 UNS N10276 Pipe Unions are ideal for extreme corrosion (e.g., chlorides, acids) in offshore, chemical, and oil/gas applications.

Selection must balance media compatibility, temperature/pressure, and cost. Consult materials engineers for critical services.

For technical documents (e.g., dimensions, welding procedures), contact us!

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