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ASME SA423 GR.1 Low Alloy Steel Welded Tube For Boiler And Superheater

    Buy cheap ASME SA423 GR.1 Low Alloy Steel Welded Tube For Boiler And Superheater from wholesalers
     
    Buy cheap ASME SA423 GR.1 Low Alloy Steel Welded Tube For Boiler And Superheater from wholesalers
    • Buy cheap ASME SA423 GR.1 Low Alloy Steel Welded Tube For Boiler And Superheater from wholesalers
    • Buy cheap ASME SA423 GR.1 Low Alloy Steel Welded Tube For Boiler And Superheater from wholesalers
    • Buy cheap ASME SA423 GR.1 Low Alloy Steel Welded Tube For Boiler And Superheater from wholesalers
    • Buy cheap ASME SA423 GR.1 Low Alloy Steel Welded Tube For Boiler And Superheater from wholesalers

    ASME SA423 GR.1 Low Alloy Steel Welded Tube For Boiler And Superheater

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    Brand Name : YuHong
    Model Number : ASME SA423 GR.1 ERW Tube
    Certification : ISO, ABS, BV, ISO, ASTM, SGS
    Price : Negotiable
    Payment Terms : T/T, L/C AT SIGHT
    Supply Ability : According to Clients' requirements
    Delivery Time : 35-60 Days (Depend on Customer's Requirements)
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    ASME SA423 GR.1 Low Alloy Steel Welded Tube For Boiler And Superheater

    ASME SA423 GR.1 Low Alloy Steel Welded Tube For Boiler and Superheater Application


    ASME SA423 Grade 1 Electric Resistance Welded (ERW) tube is a low-alloy steel tube that is manufactured using the electric resistance welding process. This type of tube is part of the ASME (American Society of Mechanical Engineers) SA423 specification, which deals with low-alloy steel tubes that are intended for use in applications that require resistance to atmospheric corrosion. It is also designed for high-temperature and high-pressure service, particularly in boilers and heat exchangers.


    Key Features:


    1. Material Composition:

    Chemical Requirements
    Composition, %
    Grade 1Grade 2Grade 3
    Carbon, max0.150.150.15
    Manganese0.55 max0.50–1.000.70–1.40
    Phosphorus0.06–0.160.04 max0.020 max
    Sulfur, max0.0600.050.020
    Silicon0.10 min...0.55 max
    Copper0.20–0.600.30–1.000.25–0.45
    Chromium0.24–1.31......
    Nickel0.20–0.700.40–1.100.50 max
    Molybdenum...0.10 min0.20 max
    Antimony......0.05–0.15

    2. Mechanical Properties of ASME SA423 Grade 1 ERW Tubes

    PropertyGrades 1 and 2Grade 3
    Tensile Strength415 MPa (60,000 psi)380 MPa (55,000 psi)
    Yield Strength255 MPa (37,000 psi)230 MPa (33,000 psi)

    Elongation, min (%),

    (in 50 mm / 2 in)

    2535
    Hardness (Brinell/Rockwell)≤ 170 HBW / ≤ 87 HRB

    3. Standards & Specifications:

    • ASME SA423: Standard specification for seamless and welded low-alloy steel tubes for boilers and superheaters.
    • Grade 1: A specific grade under this standard, optimized for high-temperature service.
    • Complies with ASME Boiler and Pressure Vessel Code (BPVC) Section II for material properties.

    4. Testing & Inspection:

    • Hydrostatic testing, ultrasonic testing (UT), or eddy current testing to ensure weld integrity.
    • Chemical and mechanical property verification per ASTM/ASME standards.

    5. Advantages of SA423 Grade 1 ERW Tubes

    AdvantageDescription
    Cost-EffectiveCheaper than seamless tubes while maintaining high strength and durability.

    High-Temperature

    Resistance

    Chromium-molybdenum (Cr-Mo) alloy provides excellent creep resistance at temperatures up to 450°C (850°F).
    Good WeldabilityERW process ensures a strong, uniform weld without filler metals, reducing defects.
    Consistent QualityPrecise dimensional control (OD, wall thickness) for reliable performance in pressure applications.
    Corrosion ResistanceLow-alloy steel composition resists oxidation and scaling in steam/high-heat environments.
    Easier FabricationERW tubes can be easily bent, flared, and welded into complex systems.
    Faster ProductionERW manufacturing is quicker than seamless tube production, ensuring better availability.
    ASME ComplianceMeets strict Boiler & Pressure Vessel Code (BPVC) standards for safety and reliability.

    Comparison with Other Grades:

    SA423 Grade 1 vs. SA213 T11/T22: While SA213 covers similar Cr-Mo alloys, SA423 Grade 1 is specifically for ERW tubes, offering a balance of performance and affordability.


    Key Applications

    ASME SA423 Grade 1 Electric Resistance Welded (ERW) tubes are designed for high-temperature and high-pressure environments, making them ideal for:

    • Power Generation:

    Boiler tubes in thermal power plants

    Superheaters & reheaters (handling steam at elevated temperatures)

    Heat exchangers & condensers

    • Oil & Gas / Petrochemical Industry:

    Refinery heat exchangers

    High-temperature pipelines

    Furnace components

    • Industrial Process Equipment:

    Chemical processing units

    Pressure vessels

    Thermal fluid systems

    • District Heating Systems:

    Hot water supply pipelines

    Steam distribution networks

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