ASME SA516 GRADE 55 Carbon Steel Plates

As a production and export expert at SHH STEEL, our ASME SA516 Grade 55 Carbon Steel Plates, also known as ASME SA516GR55 or ASME SA516 GR 55. This entry-level grade in the SA516 series is a cost-effective carbon steel designed for moderate and lower temperature pressure vessels, boilers, and storage tanks. With a tensile strength of 380-515 MPa and a minimum yield strength of 205 MPa, it’s suitable for applications requiring good toughness and weldability under pressures up to 200 bar and temperatures up to 350°C.

SHH STEEL, a leading carbon steel exporter, supplies these plates in thicknesses from 5mm to 500mm, with widths up to 4600mm and lengths to 12000mm, providing flexibility for large-scale industrial projects.

The as-rolled or normalized condition of ASME SA 516 GR 55 plates offers a fine grain structure, enhancing ductility and impact resistance for welded constructions in less demanding environments. For buyers searching for ASME SA516 Gr.55 properties or equivalents, this grade provides an economical alternative to higher grades like Gr.70, while maintaining compliance with ASME Section VIII Division 1 for pressure-containing equipment. SHH STEEL’s ASME SA516 GR.55 plates are thoroughly tested for ultrasonic inspection and Charpy impact, delivering defect-free performance that meets global standards.

With a low carbon equivalent (CE ≤0.38 per AWS D1.1), these plates facilitate easy welding, reducing the risk of hydrogen-induced cracking. The material’s ability to retain properties after heat treatment makes it ideal for multi-pass welding in vessel fabrication. SHH STEEL’s dedication to quality means every plate comes with mill test certificates, giving buyers confidence in applications like general storage tanks and low-pressure boilers.

As a production and export expert at SHH STEEL, I can confirm that ASME SA516 Grade 55 carbon steel plates are governed by ASME SA-516/SA-516M, the ASME Boiler and Pressure Vessel Code Section II Part A adaptation of ASTM A516/A516M-17. This specification outlines requirements for carbon steel plates for moderate and lower temperature service, ensuring suitability for welded pressure vessels and boilers.

SHH STEEL complies fully with this standard, providing plates in as-rolled or normalized conditions to optimize mechanical properties. The specification supports thicknesses from 5mm to 500mm, widths up to 4600mm, and lengths to 12000mm, with custom dimensions available for large-diameter vessel designs.

Ultrasonic examination per ASME SA-20 or ASTM A435 Class 1 detects laminations, guaranteeing defect-free material, while dual certification with EN 10028-2 or GB/T 713 is offered for international compatibility. This makes our ASME SA516 GR 55 plates a reliable choice for global buyers, supported by mill test certificates for complete traceability.

At SHH STEEL, we ensure the chemical composition of ASME SA516 Grade 55 is tightly controlled per ASME SA-516/SA-516M to guarantee weldability and toughness. The maximum carbon content is 0.18%, preventing brittleness, while manganese (0.60-1.20%) boosts strength.

Phosphorus and sulfur are capped at 0.035% each to minimize cracking, and silicon (0.15-0.40%) supports deoxidation during steelmaking. Optional vanadium (≤0.02%) refines grains, improving low-temperature impact resistance.

Our testing per ASME SA-350 maintains a Carbon Equivalent (CE) ≤0.38 per AWS D1.1, making ASME SA516 GR 55 plates a reliable choice for buyers searching for “ASME SA516 GR 55 chemical composition.”

As a production and export expert at SHH STEEL, I can assure you that ASME SA516 Grade 55 carbon steel plates deliver strong mechanical properties, tested per ASME SA-8 for tensile/yield, ASME SA-23 for impact, and ASME SA-466 for fatigue.

With a minimum yield strength of 205 MPa and tensile range of 380-515 MPa, these plates support moderate load-bearing capacity, while 23% elongation ensures ductility for forming. The impact energy of 27J at -20°C prevents brittle failure, and the modulus of elasticity (200 GPa per ASME SA-111) provides structural stability.

The fatigue limit (220 MPa est. per ASME SA-466) varies with surface finish, optimized by our grinding process. This makes ASME SA516 GR.55 plates a reliable choice for buyers searching for “ASME SA516 GR 55 mechanical properties.”

Delivery Conditions

SHH STEEL ensures ASME SA516 GR 55 carbon steel plates are delivered in optimal conditions to suit pressure vessel needs. We offer as-rolled, normalized (900-950°C), or stress-relieved (620-650°C) options per ASME SA-20, with quenched and tempered conditions available for enhanced toughness. As-rolled plates suit general use, while normalized refine grain for improved impact resistance, ideal for boilers up to 350°C.

Stress-relieved reduce residual stresses for welded structures, and quenched and tempered (870-900°C quench, 650°C temper) suit wear applications. Heat numbers provide traceability, and our global transit time, especially 3-7 days to Asia, ensures timely delivery.

Precision is paramount for ASME SA516 GR 55 carbon steel plates, and SHH STEEL maintains strict tolerances per ASME SA-6 to ensure seamless fabrication.

Thickness tolerance is ±1.5mm for plates under 40mm and ±2.0mm for thicker sections up to 200mm (custom 300mm).

Width and length tolerances are ±10mm standard, with ±5mm for precision orders up to 4600mm width and 12000mm length.

Surface flatness is 3mm per meter, per ASME SA-6, preventing warping during welding or heat treatment.

For European projects, EN 10029 Class B tolerances are offered, enhancing compatibility.

ASME SA516 GR 55 carbon steel plates are highly weldable due to low carbon (≤0.18%) and CE ≤0.38 per AWS D1.1.

SHH STEEL recommends preheating at 150-200°C for thicknesses over 25mm to prevent hydrogen-induced cracking, with post-weld heat treatment (PWHT) at 620-650°C for stress relief.

Supported processes include GTAW, SMAW, and GMAW with E7018 filler (AWS A5.1), achieving 90-95% joint efficiency per ASME Section IX. Low sulfur (≤0.035%) reduces hot shortness, and 23% elongation ensures ductility.

Testing includes bend tests (ASTM E190) for 3t radius and ultrasonic for weld integrity per ASME SA-435.

Global equivalents for ASME SA516 Gr.55 facilitate international projects, offering similar tensile and yield properties for pressure vessel use. For example, P265GH (EN 10028-2) is a European equivalent with 360-510 MPa tensile and 265 MPa yield, suitable for boilers in EU regulations.

SPV355 (JIS G3115) serves Japanese applications with 490-620 MPa tensile and 355 MPa yield, ideal for high-toughness vessels.

16MnDR/Q235R (GB/T 713) is the Chinese standard equivalent, providing 370-500 MPa tensile and 235 MPa yield for cost-effective pressure equipment in Asian markets.

These equivalents ensure cross-compatibility, allowing buyers to substitute ASME SA516 GR 55 plates seamlessly in global supply chains.

Supplementary requirements for ASME SA516 GR 55 carbon steel plates enhance performance for specialized applications, offering buyers tailored options.

These include ultrasonic testing (Class 1 per ASME SA-435 for no laminations >0.25% thickness), Charpy impact at -50°C (27J min per ASME SA-20 for cold service), and heat analysis per heat number (ASME SA-350 for traceability).

Product analysis allows ±0.02% tolerance on elements, while shot blasting to Sa 2.5 (50-100μm profile per ISO 8501-1) is available for surface preparation. SHH STEEL provides these to meet stringent needs, as buyers search for “SA516 Gr.55 supplementary requirements.”

ASME SA516 GR 55 carbon steel plates are versatile for low-to-moderate pressure and temperature environments, with excellent strength and toughness.

Details: Pressure vessels benefit from 380-515 MPa tensile at 350°C, while boilers handle 300°C with 23% elongation for forming. Storage tanks use 5-30mm plates for 30 bar, and oil & gas equipment leverages 30-120mm for 150 bar with NACE compliance. Heat exchangers utilize 10-40mm plates for 100 bar at 200°C, per TEMA standards for efficient heat transfer.

SHH STEEL offers ASME and ASTM-certified SA516 Gr.55 plates, with custom thicknesses up to 300mm and heat treatments tailored to your project. Our 15-year track record includes zero defect deliveries to 50+ countries, backed by SGS verification and mill test certificates.

For more other grade, please check in the following: ASME SA 516/SA 516M, ASME SA 516 GR 70, ASME SA 516 GR 65, ASME SA 516 GR 60 and ASME SA 516 gr 55 Steel Plate Grade.

SHH STEEL’s ASME SA516 Gr.55 Carbon Steel Plates provide unmatched strength and reliability for pressure vessels and boilers. With precise tolerances, superior weldability, and global equivalents, we offer customized solutions. Trust SHH STEEL for your steel needs—explore our ASTM A 516 Gr 55 page for more details.