What is the ASTM equivalent of S420MC steel plate?

EN 10149-2 S420MC Steel | ASTM Equivalent and Properties

As a premier exporter and manufacturer of high-quality structural steel plates, GNEE STEEL specializes in producing EN 10149-2 compliant materials, including the high-strength S420MC steel grade.

S420MC is a thermomechanically rolled fine-grain steel designed for cold-forming applications requiring enhanced strength and formability, such as automotive components, machinery parts, and light structural elements.

When sourcing internationally, understanding the ASTM equivalent of S420MC is essential for project compliance and substitution. The closest ASTM equivalent is A572 Grade 60 (ASTM A572/A572M), a high-strength low-alloy steel with similar yield strength (415 MPa) and weldability, though minor differences in composition and delivery condition exist.

ASTM Equivalent to S420MC Steel

The ASTM equivalent to S420MC is A572 Grade 60 (ASTM A572/A572M), a high-strength low-alloy columbium-vanadium structural steel with a minimum yield strength of 415 MPa. A572 Gr. 60 matches S420MC's strength profile and is commonly used in similar applications, though it is typically hot-rolled without the thermomechanical processing emphasis on cold formability.

Other close equivalents include:

A1011 HSLAS Grade 60(ASTM A1011) for sheet and strip forms.

A656 Grade 60(ASTM A656) for plates requiring enhanced formability.

When substituting, verify delivery condition and formability requirements, as ASTM grades may not guarantee the same bending radii as S420MC.

S420MC steel, designated as 1.0980 under EN 10149-2, is part of the family of hot-rolled high-yield strength steels for cold forming.

The "S" denotes structural steel, "420" indicates a minimum yield strength of 420 MPa, and "MC" specifies thermomechanical rolling (+M) for improved ductility and bendability.

Compared to normalized grades like en 10025 3 s420n normalized structural steel plate, S420MC focuses on cold formability rather than low-temperature toughness, making it perfect for applications where bending, pressing, or deep drawing is required without sacrificing strength.

GNEE STEEL produces S420MC in thicknesses up to 20 mm, with precise control over microalloying elements for optimal grain refinement.

The chemical makeup of S420MC is balanced to provide high strength while maintaining formability, with a maximum Carbon Equivalent Value (CEV) of 0.43.

S420MC exhibits robust mechanical characteristics, with properties varying by thickness for cold-forming needs. All values are for thermomechanically rolled (+M) condition.

Yield Strength (ReL, Minimum, MPa)

Tensile Strength (Rm, MPa)

Elongation (A, Minimum, %; A80 for ≤3 mm, A5 for >3 mm)

Bend Radius (r/t for 90° Bend)

S420MC steel from EN 10149-2 provides exceptional strength (420 MPa yield) and formability for cold-forming applications, with ASTM A572 Grade 60 as its closest equivalent. Its low-carbon composition and thermomechanical rolling ensure reliability in automotive and machinery sectors, making it a cost-effective choice for lightweight designs.

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