Normalized ASME SA266 Gr.2N Carbon Steel Stationary Tubesheet For Heat Exchanger

Product Specification

ASME SA266 Gr.2N Carbon Steel Stationary Tubesheet For Heat Exchanger

Product Overview
This stationary tubesheet is manufactured from ASME SA266 Grade 2N (Normalized) Carbon Steel, a premium plate material engineered for superior performance in high-pressure and high-temperature heat exchangers. The normalization heat treatment refines the grain structure, resulting in enhanced mechanical properties and greater dimensional stability compared to standard grades. This makes it the ideal, cost-effective choice for demanding applications in power generation, oil refining, and petrochemical plants where strength and reliability are critical, but corrosion is not a primary concern.

Key Features & Advantages

• Superior Strength from Normalization: The “N” designation signifies the plate has undergone normalization. This process provides higher tensile and yield strength, along with improved through-thickness properties, ensuring the tubesheet can withstand significant pressure differentials and thermal stresses without deformation.

• Optimized for High-Pressure Design: SA-266 Gr.2N meets the stringent material requirements of ASME Section VIII, Division 1 for pressure vessels. Its reliable mechanical properties allow for safe and efficient design of exchangers operating at high shell-and-tube side pressures.

• Excellent Machinability & Weldability: Despite its increased strength, normalized carbon steel maintains excellent fabrication characteristics. It allows for precision drilling of complex tube patterns and clean machining of pass partition grooves, ensuring a perfect fit for tubes and baffles. It is also readily weldable to carbon steel shells and channels.

• Proven Reliability in Non-Corrosive Service: For services such as high-pressure feedwater, steam, hydrocarbons, and other non-aggressive media, Gr.2N offers unmatched reliability and longevity, providing an outstanding balance of performance and lifecycle cost.

• Full Material Traceability & Certification: Each tubesheet is supplied with complete Mill Test Reports (MTRs) certifying compliance with ASME SA266 Gr.2N, including chemical analysis, mechanical property tests, and the normalization heat treatment record.

Typical Applications

• Power Generation: High-Pressure Feedwater Heaters, Condensers.

• Oil & Gas Refining: Crude oil exchangers, hydrocracker feed/effluent exchangers (shell side).

• Petrochemical: Various process gas and liquid coolers/heaters.

• Industrial Boilers: Associated heat recovery equipment.

Technical Specifications (Summary)

• Material Standard: ASME SA266 / ASTM A266, Grade 2, Normalized (Gr. 2N).

• Key Mechanical Properties (Typical):

  • Tensile Strength: 415-585 MPa (60-85 ksi)

  • Yield Strength: Min. 240 MPa (35 ksi)

• Manufacturing Process: Fully killed steel, normalized heat treatment.

• Machining: Precision-machined to client-provided TEMA layout drawings, including drilling, facing, and grooving.

• Key Certification: Certified Mill Test Report (MTR) provided.

Why Choose Our SA266 Gr.2N Tubesheets?
We specialize in transforming certified raw materials into mission-critical components. Our machining expertise ensures precise tolerances and surface finishes, guaranteeing that your tubesheet integrates seamlessly into your exchanger, providing a robust and leak-free foundation for years of reliable operation.