What is the ASTM equivalent of S420MC steel?

EN 10149-2 S420MC Steel | ASTM Equivalent and Properties

As a premier exporter and manufacturer of high-quality structural steel plates, Gangsteel 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.

Gangsteel supplies S420MC and ASTM-equivalent plates with dual certifications, ensuring seamless integration for global projects. For related grades, see our en 10025 3 normalized steel plate offerings.

What is S420MC Steel?

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.

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

Chemical Composition of S420MC Steel

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

*Note: Microalloying (Nb + Ti + V ≤ 0.22%) ensures fine-grain structure. Low P and S improve toughness.

Mechanical Properties of S420MC Steel

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)

These properties position S420MC as a lightweight, formable alternative to standard structural steels, outperforming S355 in strength while maintaining ductility.

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.

Equivalent Grades to S420MC

Why Choose Gangsteel for S420MC Steel?

Gangsteel delivers ISO-certified S420MC plates tailored to your specifications, with stock in various sizes and rapid global export. Visit our en 10025 3 s420nl normalized structural steel plate page for higher-toughness variants or contact our sales team today.

Summary

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.

FAQ

What is the ASTM equivalent to S420MC steel?

ASTM A572 Grade 60, with 415 MPa yield strength and similar high-strength low-alloy properties, though it lacks S420MC's specific cold-forming guarantees.

How does S420MC differ from S420N steel?

S420MC (EN 10149-2) is thermomechanically rolled for cold forming, while S420N (EN 10025-3) is normalized for welded structures with defined impact toughness at -20°C.

What is the CEV of S420MC steel?

Maximum CEV of 0.43, ensuring excellent weldability without preheating for thicknesses up to 20 mm.

Can S420MC be used for welding?

Yes, its low CEV (0.43) allows welding with low-hydrogen fillers; preheating is recommended for thicker sections.

What are common equivalents to S420MC in other standards?

DIN TStE 420, JIS SM570, and GB Q420B offer similar high-strength properties when thermomechanically processed.