ASME SA213 T12 Boiler Tubing
Product Overview
ASME SA213 T12 boiler tubing is a seamless ferritic alloy steel tube designed for high-temperature and high-pressure boiler, superheater, and heat exchanger applications. Manufactured according to ASME SA213 / ASTM A213 standards, T12 tubing contains chromium and molybdenum alloying elements, providing improved creep strength, oxidation resistance, and thermal stability compared with carbon steel boiler tubes.
SA213 T12 is widely used in power generation boilers, industrial boilers, waste heat recovery boilers, refinery heaters, and high-temperature heat exchanger systems where reliable performance is required under elevated temperature conditions. Its balanced alloy composition provides excellent resistance to graphitization and long-term thermal degradation, making it suitable for continuous operation in demanding environments.
Our ASME SA213 T12 boiler tubes are produced using advanced seamless manufacturing processes with strict quality control to ensure dimensional accuracy, metallurgical consistency, and dependable service life.
Product Specifications
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Item
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Description
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Product Name
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ASME SA213 T12 Boiler Tubing
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Standard
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ASME SA213 / ASTM A213
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Material Grade
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T12 (1Cr-0.5Mo Alloy Steel)
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Manufacturing Process
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Seamless Cold Drawn / Hot Finished
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Tube Type
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Seamless Ferritic Alloy Steel Tube
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Application
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Boilers, Superheaters, Heat Exchangers, Waste Heat Recovery Systems
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Surface Condition
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Pickled, Annealed, Bright Annealed, or Customized
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Heat Treatment
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Full Annealing, Isothermal Annealing, or Normalizing & Tempering
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Common Size Range
ASME SA213 T12 boiler tubing can be supplied in a wide range of outside diameters and wall thicknesses according to project requirements.
Standard Tube Dimensions
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Parameter
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Typical Range
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Outside Diameter (OD)
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6.35 mm – 219.1 mm
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Wall Thickness
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0.8 mm – 30 mm
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Length
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5,800 mm – 12,000 mm (or customized)
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Typical Boiler Tube Sizes
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25.4 mm * 2.5 mm, 31.8 mm * 3.2 mm, 38.1 mm * 4 mm, 50.8 mm * 5 mm
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End Finish
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Plain End, Beveled End, Customized
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Special dimensions, tight tolerances, and cut lengths can be manufactured according to customer drawings and boiler fabrication requirements.
Applications
ASME SA213 T12 alloy steel tubing is commonly applied in:
- High-pressure steam boilers
- Power plant boiler superheaters and reheaters
- Waste heat recovery boilers (WHRB)
- Industrial process boilers
- Refinery and petrochemical heating equipment
- High-temperature heat exchangers
- Fired heater convection sections
- Energy recovery systems
The material is particularly suitable for components exposed to elevated temperatures where improved creep resistance and oxidation protection are required.
Chemical Composition (Typical)
According to ASME SA213 requirements, the chemical composition of T12 alloy steel is controlled as follows:
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Element
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Composition (%)
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Carbon (C)
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0.05 – 0.15
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Manganese (Mn)
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0.30 – 0.61
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Phosphorus (P)
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≤ 0.025
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Sulfur (S)
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≤ 0.025
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Silicon (Si)
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≤ 0.50
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Chromium (Cr)
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0.80 – 1.25
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Molybdenum (Mo)
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0.44 – 0.65
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Iron (Fe)
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Balance
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The addition of chromium improves oxidation resistance, while molybdenum enhances high-temperature strength and creep performance.
Mechanical Properties
Typical mechanical properties of ASME SA213 T12 tubing:
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Property
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Requirement
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Tensile Strength
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≥ 415 MPa
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Yield Strength
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≥ 205 MPa
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Elongation (min.)
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≥ 30%
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Hardness (Max.)
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89 HRB / 170 HBW
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The mechanical properties ensure good strength retention during long-term exposure to high-pressure steam and elevated operating temperatures.
Manufacturing Process
Our ASME SA213 T12 boiler tubes are manufactured through controlled production procedures:
1. Raw Material Selection
High-quality alloy steel billets are selected with verified chemical composition.
2. Seamless Tube Production
The billets undergo hot piercing, rolling, and cold drawing processes to achieve accurate dimensions and uniform wall thickness.
3. Heat Treatment
Tubes receive appropriate heat treatment to optimize metallurgical structure, toughness, and high-temperature performance.
4. Surface Finishing
Final surface treatment ensures smoothness, cleanliness, and suitability for boiler installation.
5. Inspection and Testing
Each tube is inspected according to ASME SA213 requirements before delivery.
Inspection and Testing Methods
To ensure reliable performance in critical boiler applications, ASME SA213 T12 tubes undergo comprehensive inspection:
Chemical Analysis
- Optical Emission Spectrometer (OES) testing
- Verification of alloy composition according to ASME SA213 requirements
Mechanical Testing
- Tensile testing
- Yield strength testing
- Elongation testing
- Hardness testing
Non-Destructive Testing (NDT)
- Hydrostatic Test
- Confirms pressure resistance and leak tightness
- Eddy Current Testing
- Detects surface and near-surface defects
- Ultrasonic Testing (UT)
- Identifies internal flaws, laminations, and wall defects
Dimensional Inspection
- Outside diameter measurement
- Wall thickness inspection
- Length verification
- Straightness inspection
Metallurgical Examination
- Microstructure analysis
- Grain structure evaluation
- Heat treatment verification
All inspection records can be provided with a Mill Test Certificate (MTC) according to EN 10204 3.1 or 3.2 requirements upon request.
Advantages of ASME SA213 T12 Boiler Tubing
- Excellent high-temperature strength
- Superior creep resistance compared with carbon steel tubes
- Good oxidation resistance in steam environments
- Reliable performance in pressure-bearing applications
- Long service life under thermal cycling conditions
- Suitable for customized boiler and heat exchanger designs
- Fully compliant with ASME SA213 quality requirements
We provide ASME SA213 T12 boiler tubing with strict control from raw material inspection to final testing. Our manufacturing capability supports customized dimensions, special requirements, and complete quality documentation for global boiler manufacturers, EPC contractors, and industrial equipment suppliers.
With consistent material quality, accurate dimensions, and comprehensive inspection procedures, our T12 alloy steel tubes are engineered for demanding high-temperature applications in the energy and process industries.
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