ASTM A556 Superheater Tube

arameterDetails
StandardASTM A556 / ASME SA556
Pipe TypeSuperheater Tubes, Heat Exchanger Tubes
GradesGrade A2, Grade B2, Garde C2
DimensionsOuter Diameter (OD): 12.7 mm to 114.3 mm
Wall Thickness1.2 mm to 12 mm
LengthUp to 12 meters (custom lengths available upon request)
Manufacturing ProcessSeamless Cold-Drawn or Hot-Finished
Material Surface FinishSmooth Finish, Polished, Pickled
End TypePlain End (PE), Beveled End (BE), Threaded End (TE)
CertificationsISO 45001/14001/9001, CE
Categories: ,

Description

Product Description ASTM A556 Superheater Tube

ASTM A556 is a specification that defines seamless cold-drawn carbon steel tubes designed for use in boilers and heat exchangers, specifically in high-pressure applications like superheater and reheater sections. These tubes are engineered to withstand extreme temperature fluctuations, high pressures, and corrosive environments, making them a vital component in the power generation, petrochemical, and industrial sectors.

Material and Standards
ASTM A556 tubes are made from carbon-manganese steel, offering exceptional mechanical strength, thermal resistance, and durability. The specification is divided into two grades: Grade A2 and Grade B2. Each grade has distinct chemical and mechanical properties tailored to meet specific application requirements. These tubes are manufactured to meet precise tolerances, ensuring reliable performance in demanding conditions.

Key Features and Benefits

  1. High Strength: Offers excellent mechanical strength to withstand elevated temperatures and pressures.
  2. Corrosion Resistance: Resistant to oxidation and corrosion in high-temperature conditions.
  3. Thermal Stability: Maintains structural integrity under extreme thermal conditions.
  4. Precise Dimensions: Cold-drawn manufacturing ensures superior dimensional accuracy and smooth internal/external finishes.

Applications

  1. Superheaters: Used in boilers for converting saturated steam into superheated steam.
  2. Heat Exchangers: Provides efficient heat transfer in industrial systems.
  3. Boilers: Integral to maintaining high-efficiency performance in power generation.

ASTM A556 Grade A2, B2, and C2 Chemical Composition

ElementGrade A2Grade B2Grade C2
Carbon (C)0.180.200.24
Manganese (Mn)0.27-0.630.30-0.800.30-0.93
Phosphorus (P)0.0250.0250.025
Sulfur (S)0.0250.0250.025
Silicon (Si)0.100.100.10

ASTM A556 Grade A2, B2, and C2 Mechanical Properties

PropertyGrade A2Grade B2Grade C2
Tensile Strength, min (MPa)345 (50 ksi)415 (60 ksi)485 (70 ksi)
Yield Strength, min (MPa)205 (30 ksi)240 (35 ksi)275 (40 ksi)
Elongation, min (%)353030

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