Buscar en toda la estación
Acero ASTM A572 es un acero estructural de alta resistencia y baja aleación (HSLA) specification used in buildings, bridges, machinery and other structural applications. It covers Grades 42, 50, 55, 60 and 65, with different strength and chemical composition requirements.
Esta guía incluye ASTM A572 equivalent grades, A572 steel properties, límite elástico, composición química and purchasing considerations to help buyers select the right material.
The following table lists grades commonly compared when sourcing ASTM A572 equivalent materials. These are comparison candidates, not guaranteed direct equivalents.
| ASTM A572 Grade | Commonly Compared Grade | Estándar |
|---|---|---|
| Grado 42 | S275JR | EN 10025-2 |
| Grado 42 | SM400A / IS 2062 E250 | Applicable JIS / IS standards |
| Grado 50 | S355JR | EN 10025-2 |
| Grado 50 | Q345B / Q355B | Applicable GB standards |
| Grado 50 | SM490A / IS 2062 E350 | Applicable JIS / IS standards |
| Grado 60 | S420-series grades / SM490YA | Verify the specific standard and grade |
| Grado 65 | S460-series grades / SM490YB | Verify the specific standard and grade |
ASTM A572 Grade 50 equivalent: S355JR, Q345B and Q355B are commonly considered during material sourcing because of their structural applications and strength levels. However, their chemical composition, impact requirements, dimensions and other standard requirements differ.
Before substituting materials, compare the applicable standards and confirm that the proposed grade meets the project requirements.
En mechanical properties of ASTM A572 steel vary by grade. The table below summarizes the specified minimum yield and tensile strength values listed in ASTM A572/A572M reference editions. Confirm the applicable edition and product requirements before using these figures for design or procurement.
| Grado | Minimum Yield Strength | Minimum Tensile Strength | Typical Application Context |
|---|---|---|---|
| A572 Grade 42 | 290 MPa (42 ksi) | 415 MPa (60 ksi) | Structural applications specified for this grade |
| A572 Grado 50 | 345 MPa (50 ksi) | 450 MPa (65 ksi) | Fabricación estructural general |
| A572 Grade 55 | 380 MPa (55 ksi) | 485 MPa (70 ksi) | Structures designed for this strength level |
| A572 Grade 60 | 415 MPa (60 ksi) | 520 MPa (75 ksi) | Higher-strength structural applications |
| A572 Grade 65 | 450 MPa (65 ksi) | 550 MPa (80 ksi) | Applications requiring higher specified strength |
These are reference minimum values, not tensile-strength ranges. Verify the applicable ASTM A572/A572M edition, product form, dimensions and grade-specific requirements before ordering.
The table below summarizes key ASTM A572 chemical composition requirements from ASTM A572/A572M-21. Values are heat-analysis limits in weight percent (%); product dimensions and specific standard provisions affect which limits apply.
| Grado | Carbon, Max. | Manganese, Max. | Phosphorus, Max. | Sulfur, Max. | Silicio |
|---|---|---|---|---|---|
| A572 Grade 42 | 0.21% | 1.35%* | 0.030%* | 0.030%* | Max. 0.40% or 0.15–0.40% |
| A572 Grado 50 | 0.23% | 1.35%* | 0.030%* | 0.030%* | Max. 0.40% or 0.15–0.40% |
| A572 Grade 55 | 0.25% | 1.35%* | 0.030%* | 0.030%* | Max. 0.40% or 0.15–0.40% |
| A572 Grade 60 | 0.26% | 1.35%* | 0.030%* | 0.030%* | Max. 0.40% or 0.15–0.40% |
| A572 Grade 65 | 0.23% or 0.26%** | 1.65% or 1.35%** | 0.030%* | 0.030%* | Max. 0.40% or 0.15–0.40% |
* Manganese, phosphorus, sulfur and silicon requirements: Applicable limits and exceptions depend on product type, dimensions and the standard’s provisions. The standard permits manganese adjustments under specified conditions and allows higher phosphorus/sulfur limits for certain product categories.
** Grade 65: The applicable carbon and manganese limits depend on product thickness or size. An alternative chemistry requirement is also permitted under the standard.
The steel also requires specified alloy content involving niobium (columbium), vanadium, titanium and/or nitrogen. Confirm the complete chemistry requirements and actual heat analysis on the material test certificate (MTC) before procurement. Gr.42 and Gr.55 not shown; Gr.42 has lower C/Mn, Gr.55 is intermediate. Full data available upon request.*
ASTM A572 structural steel is used where its specified strength and product characteristics meet the design and project requirements. Common application areas include:
For bridge and highway structures, ASTM A572 is often compared with A709 steel due to differences in toughness requirements and weathering performance. For a detailed comparison and grade breakdown, see our ASTM A709 steel plate grades and applications guide.
Tanto si eres un almacenista, empresa comercial o taller de transformaciónLos aceros A572 proporcionan flexibilidad para la distribución en múltiples mercados.
En Acero CJMmantenemos stock regular para A572 Gr.50 / S355JRcon laminado a medida disponible para calidades superiores como Gr.60 y Gr.65. Nuestro equipo ayuda a los clientes a equivalentes regionales (EN, IS, JIS) y garantiza el cumplimiento sin problemas de las especificaciones del proyecto.
check our dedicated pages:
Learn what abrasion resistant steel is, how it works, key properties, grade systems, and how it compares with other abrasion resistant metals in industrial use.
Ver detalles
Learn how steel plate price per ton is affected by thickness, grade, and standards. A practical guide for buyers comparing steel plate prices.
Ver detalles
Technical comparison of AH36, DH36, and EH36 shipbuilding steel grades. Covers impact toughness differences, applications, and sourcing considerations.
Ver detalles
La chapa de aleación de monel es un material de alto rendimiento fabricado a partir de una combinación de níquel y cobre, que ofrece una extraordinaria resistencia a la corrosión y una gran solidez.
Ver detalles
CJM Steel Group Ltd.
This is a very thorough breakdown of A572 grades, especially the procurement insights for Gr. 50 and its S355JR equivalents which are vital for our current offshore projects. We are actually looking into a structural fabrication contract near the Costa del Sol region and were comparing these specs for local compliance. Since we are coordinating this internationally, does CJM Steel provide specific mill test reports that satisfy Eurocode requirements for Spanish inspections? Also, on the logistics side, I’m wondering if you have any preferred freight forwarders in the Algeciras port area who are familiar with handling high-strength structural plates?
2026-02-2720:58