SA192 boiler tubes are mainly used in high-pressure boilers, including components such as heating surface tubes, headers, economizers, superheaters, and reheaters. Their working pressure usually does not exceed 9.8 MPa, and their working temperature range is between 450℃ and 650℃.
Core Characteristics
Material Composition
Carbon content 0.06%-0.18%, Manganese 0.27%-0.63%, Phosphorus/Sulfur ≤0.035%, addition of non-specified alloying elements is prohibited.
Mechanical Properties
Tensile strength ≥325MPa, Yield strength ≥180MPa, Elongation ≥35%, Hardness upper limit 137HB or 77HRB.
Dimensions
Outer diameter range 12.7-177.8mm, Wall thickness 2.2-25.4mm, Cold-drawn tubes require ≥650°C heat treatment.
Features:
1. Outstanding High-Temperature Performance: Maintains stable tensile strength (≥325MPa) and yield strength (≥180MPa) even during long-term operation below 540℃, making it particularly suitable for water-cooled wall tube design in power plant boilers.
2. Good Process Adaptability: The surface finish of the steel tubes obtained through cold drawing can reach Ra≤0.8μm, and the dimensional accuracy is controlled within ±0.1mm, allowing direct use in the assembly of precision heat exchange equipment.
3. Safety and Reliability: Strictly adheres to ASME SA192 standards, requiring hydrostatic testing (≥6.9MPa), eddy current testing, or ultrasonic testing to ensure the absence of defects such as cracks and folds.